# HyperFormula changelog
All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [2.0.0] - 2022-04-14

For more information on this release, see:
- [Release notes](https://handsontable.github.io/hyperformula/guide/release-notes.html)
- [Blog post](https://handsontable.com/blog/articles/2022/04/whats-new-in-hyperformula-2.0.0)
- [Migration guide](https://handsontable.github.io/hyperformula/guide/migration-from-1.0-to-2.0.html)

### Added
- Added support for reversed ranges. [#834](https://github.com/handsontable/hyperformula/issues/834)
- Added a new configuration option, `ignoreWhiteSpace`, which allows for parsing formulas that contain whitespace characters of any kind. [#898](https://github.com/handsontable/hyperformula/issues/898)

### Changed
- **Breaking change**: Removed the `gpu.js` dependency and its use, to speed up the installation time. [#812](https://github.com/handsontable/hyperformula/issues/812)
- **Breaking change**: Removed the deprecated `gpujs` and `gpuMode` configuration options. [#812](https://github.com/handsontable/hyperformula/issues/812)

### Fixed
- Fixed an issue where the RATE function didn't converge for some inputs. [#905](https://github.com/handsontable/hyperformula/issues/905)

## [1.3.1] - 2022-01-11

### Fixed
- Fixed an issue where warnings about deprecated configuration options were getting duplicated. [#882](https://github.com/handsontable/hyperformula/issues/882)

## [1.3.0] - 2021-10-20

### Added
- Added a new static property: `defaultConfig`. [#822](https://github.com/handsontable/hyperformula/issues/822)
- The `getFillRangeData()` method can now use one sheet for its source and another sheet for its target. [#836](https://github.com/handsontable/hyperformula/issues/836)

### Fixed
- Fixed the handling of Unicode characters and non-letter characters in the `PROPER` function. [#811](https://github.com/handsontable/hyperformula/issues/811)
- Fixed unnecessary warnings caused by deprecated configuration options. [#830](https://github.com/handsontable/hyperformula/issues/830)
- Fixed the `SUMPRODUCT` function. [#810](https://github.com/handsontable/hyperformula/issues/810)

## [1.2.0] - 2021-09-23

### Changed
- Removed `gpu.js` from optional dependencies and marked config options `gpujs` and `gpuMode` as deprecated.

## [1.1.0] - 2021-08-12

### Changed
- Deprecated the `binarySearchThreshold` configuration option, as every search of sorted data always uses binary search. [#791](https://github.com/handsontable/hyperformula/issues/791)

### Added
- Added support for the array arithmetic mode in the `calculateFormula()` method. [#782](https://github.com/handsontable/hyperformula/issues/782)
- Added a new `CellType` returned by `getCellType`: `CellType.ARRAYFORMULA`. It's assigned to the top-left corner of an array, and is recognized by the `isCellPartOfArray()` and `doesCellHaveFormula()` methods. [#781](https://github.com/handsontable/hyperformula/issues/781)

### Fixed
- Fixed an issue with searching sorted data. [#787](https://github.com/handsontable/hyperformula/issues/787)
- Fixed the `destroy` method to properly destroy HyperFormula instances. [#788](https://github.com/handsontable/hyperformula/issues/788)


## [1.0.0] - 2021-07-15

### Changed
- **Breaking change**: Changed API of many sheet-related methods to take sheetId instead of sheetName as an argument. [#645](https://github.com/handsontable/hyperformula/issues/645)
- **Breaking change**: Removed support for matrix formulas (`{=FORMULA}`) notation. Engine now supports formulas returning array of values (instead of only scalars). [#652](https://github.com/handsontable/hyperformula/issues/652)
- **Breaking change**: Removed numeric matrix detection along with matrixDetection and matrixDetectionThreshold config options. [#669](https://github.com/handsontable/hyperformula/issues/669)
- **Breaking change**: Changed API of the following methods to take `SimpleCellRange` type argument: `copy`,  `cut`, `getCellDependents`, `getCellPrecedents`, `getFillRangeData`, `getRangeFormulas`,  `getRangeSerialized`, `getRangeValues`, `isItPossibleToMoveCells`, `isItPossibleToSetCellContents`, `moveCells`. [#687](https://github.com/handsontable/hyperformula/issues/687)
- **Breaking change**: Changed the AGPLv3 license to GPLv3.
- **Breaking change**: Removed the free non-commercial license.
- **Breaking change**: Changed behaviour of `setCellContents` so that it is possible to override space occupied by spilled array. [#708](https://github.com/handsontable/hyperformula/issues/708)
- **Breaking change**: Changed behaviour of `addRows/removeRows` so that it is possible to add/remove rows across spilled array without changing array size. [#708](https://github.com/handsontable/hyperformula/issues/708)
- **Breaking change**: Changed behaviour of `addColumns/removeColumns` so that it is possible to add/remove columns across spilled array without changing array size. [#732](https://github.com/handsontable/hyperformula/issues/732)
- **Breaking change**: Changed config options [#747](https://github.com/handsontable/hyperformula/issues/747):

| before                | after                |
|-----------------------|----------------------|
| matrixColumnSeparator | arrayColumnSeparator |
| matrixRowSeparator    | arrayRowSeparator    |

- **Breaking change**: Changed CellType.MATRIX to CellType.ARRAY [#747](https://github.com/handsontable/hyperformula/issues/747)
- **Breaking change**: Changed API methods [#747](https://github.com/handsontable/hyperformula/issues/747):

| before             | after             |
|--------------------|-------------------|
| matrixMapping      | arrrayMapping     |
| isCellPartOfMatrix | isCellPartOfArray |

- **Breaking change**: Changed Exceptions [#747](https://github.com/handsontable/hyperformula/issues/747):

| before                       | after                       |
|------------------------------|-----------------------------|
| SourceLocationHasMatrixError | SourceLocationHasArrayError |
| TargetLocationHasMatrixError | TargetLocationHasArrayError |

- Changed SWITCH function, so it takes array as its first argument.
- Changed TRANSPOSE function, so it works with data of any type. [#708](https://github.com/handsontable/hyperformula/issues/708)
- Changed the way how we include `gpu.js` making it even more optional [#753](https://github.com/handsontable/hyperformula/issues/753)

### Added
- Added support for array arithmetic. [#628](https://github.com/handsontable/hyperformula/issues/628)
- Added performance improvements for array handling. [#629](https://github.com/handsontable/hyperformula/issues/629)
- Added ARRAYFORMULA function. [#630](https://github.com/handsontable/hyperformula/issues/630)
- Added FILTER function. [#668](https://github.com/handsontable/hyperformula/issues/668)
- Added ARRAY_CONSTRAIN function. [#661](https://github.com/handsontable/hyperformula/issues/661)
- Added casting to scalars from non-range arrays. [#663](https://github.com/handsontable/hyperformula/issues/663)
- Added support for range interpolation. [#665](https://github.com/handsontable/hyperformula/issues/665)
- Added parsing of arrays in formulas (together with respective config options for separators). [#671](https://github.com/handsontable/hyperformula/issues/671)
- Added support for vectorization of scalar functions. [#673](https://github.com/handsontable/hyperformula/issues/673)
- Added support for time in JS `Date()` objects on the input. [#648](https://github.com/handsontable/hyperformula/issues/648)
- Added validation of API argument types for simple types. [#654](https://github.com/handsontable/hyperformula/issues/654)
- Added named expression handling to engine factories. [#680](https://github.com/handsontable/hyperformula/issues/680)
- Added `getAllNamedExpressionsSerialized` method. [#680](https://github.com/handsontable/hyperformula/issues/680)
- Added parsing of arrays in formulas (together with respective config options for separators). [#671](https://github.com/handsontable/hyperformula/issues/671)
- Added utility function for filling ranges with source from other range. [#678](https://github.com/handsontable/hyperformula/issues/678)
- Added pretty print for detailedCellError. [#712](https://github.com/handsontable/hyperformula/issues/712)
- Added `simpleCellRangeFromString` and `simpleCellRangeToString` helpers. [#720](https://github.com/handsontable/hyperformula/issues/720)
- Added `CellError` to exports. [#736](https://github.com/handsontable/hyperformula/issues/736)
- Added mapping policies to the exports:   `AlwaysDense`, `AlwaysSparse`, `DenseSparseChooseBasedOnThreshold`. [#747](https://github.com/handsontable/hyperformula/issues/747)
- Added `#SPILL!` error type. [#708](https://github.com/handsontable/hyperformula/issues/708)
- Added large tests for CRUD interactions. [#755](https://github.com/handsontable/hyperformula/issues/755)
- Added support for array arithmetic in plugins. [#766](https://github.com/handsontable/hyperformula/issues/766)
- Added a flag to `getFillRangeData` to support different types of offsetting. [#767](https://github.com/handsontable/hyperformula/issues/767)

### Fixed
- Fixed an issue with arrays and cruds. [#651](https://github.com/handsontable/hyperformula/issues/651)
- Fixed handling of arrays for ROWS/COLUMNS functions. [#677](https://github.com/handsontable/hyperformula/issues/677)
- Fixed an issue with nested named expressions. [#679](https://github.com/handsontable/hyperformula/issues/679)
- Fixed an issue with matrixDetection + number parsing. [#686](https://github.com/handsontable/hyperformula/issues/686)
- Fixed an issue with NOW and TODAY functions. [#709](https://github.com/handsontable/hyperformula/issues/709)
- Fixed an issue with MIN/MAX function caches. [#711](https://github.com/handsontable/hyperformula/issues/711)
- Fixed an issue with caching and order of evaluation. [#735](https://github.com/handsontable/hyperformula/issues/735)

## [0.6.2] - 2021-05-26

### Changed
- Modified a private field in one of the classes to ensure broader compatibility with older TypeScript versions. [#681](https://github.com/handsontable/hyperformula/issues/681)

## [0.6.1] - 2021-05-24

### Changed
- Remove redundant `'assert'` dependency from the code. [#672](https://github.com/handsontable/hyperformula/issues/672)

### Fixed
- Fixed library support for IE11. The `unorm` package is added to the dependencies. [#675](https://github.com/handsontable/hyperformula/issues/675)

## [0.6.0] - 2021-04-27

### Changed
- **Breaking change**: Moved `GPU.js` from `dependencies` to `devDependencies` and `optionalDependencies`. [#642](https://github.com/handsontable/hyperformula/issues/642)

### Added
- Added two new fired events, for suspending and resuming execution. [#637](https://github.com/handsontable/hyperformula/issues/637)
- Added listing in scopes to `listNamedExpressions` method. [#638](https://github.com/handsontable/hyperformula/issues/638)

### Fixed
- Fixed issues with scoped named expression. [#646](https://github.com/handsontable/hyperformula/issues/646) [#641](https://github.com/handsontable/hyperformula/issues/641)
- Fixed an issue with losing formating info about DateTime numbers. [#626](https://github.com/handsontable/hyperformula/issues/626)

## [0.5.0] - 2021-04-15

### Changed
- **Breaking change**: A change to the type of value returned via serialization methods. [#617](https://github.com/handsontable/hyperformula/issues/617)
- An input value should be preserved through serialization more precisely. [#617](https://github.com/handsontable/hyperformula/issues/617)
- GPU.js constructor needs to be provided directly to engine configuration. [#355](https://github.com/handsontable/hyperformula/issues/355)
- A deprecated config option vlookupThreshold has been removed. [#620](https://github.com/handsontable/hyperformula/issues/620)

### Added
- Added support for row and column reordering. [#343](https://github.com/handsontable/hyperformula/issues/343)
- Added type inferrence for subtypes for number. [#313](https://github.com/handsontable/hyperformula/issues/313)
- Added parsing of number literals containing '%' or currency symbol (default '$'). [#590](https://github.com/handsontable/hyperformula/issues/590)
- Added ability to fallback to plain CPU implementation for functions that uses GPU.js [#355](https://github.com/handsontable/hyperformula/issues/355)

### Fixed
- Fixed minor issue. [#631](https://github.com/handsontable/hyperformula/issues/631)
- Fixed a bug with serialization of some addresses after CRUDs. [#587](https://github.com/handsontable/hyperformula/issues/587)
- Fixed a bug with MEDIAN function implementation. [#601](https://github.com/handsontable/hyperformula/issues/601)
- Fixed a bug with copy-paste operation that could cause out of scope references [#591](https://github.com/handsontable/hyperformula/issues/591)
- Fixed a bug with date parsing. [#614](https://github.com/handsontable/hyperformula/issues/614)
- Fixed a bug where accent/case sensitivity was ignored for LOOKUPs. [#621](https://github.com/handsontable/hyperformula/issues/621)
- Fixed a bug with handling of no time format/no date format scenarios. [#616](https://github.com/handsontable/hyperformula/issues/616)

## [0.4.0] - 2020-12-17

### Changed
- A **breaking change**: CEILING function implementation to be consistent with existing implementations. [#582](https://github.com/handsontable/hyperformula/issues/582)

### Added
- Added 50 mathematical functions: ROMAN, ARABIC, FACT, FACTDOUBLE, COMBIN, COMBINA, GCD, LCM, MROUND, MULTINOMIAL, QUOTIENT, RANDBETWEEN, SERIESSUM, SIGN, SQRTPI, SUMX2MY2, SUMX2PY2, SUMXMY2, CEILING.MATH, FLOOR.MATH, FLOOR, CEILING.PRECISE, FLOOR.PRECISE, ISO.CEILING, COMPLEX, IMABS, IMAGINARY, IMARGUMENT, IMCONJUGATE, IMCOS, IMCOSH, IMCOT, IMCSC, IMCSCH, IMDIV, IMEXP, IMLN, IMLOG10, IMLOG2, IMPOWER, IMPRODUCT, IMREAL, IMSEC, IMSECH, IMSIN, IMSINH, IMSQRT, IMSUB,  IMSUM, IMTAN. [#537](https://github.com/handsontable/hyperformula/issues/537) [#582](https://github.com/handsontable/hyperformula/issues/582) [#281](https://github.com/handsontable/hyperformula/issues/281) [#581](https://github.com/handsontable/hyperformula/issues/581)
- Added 106 statistical functions: EXPON.DIST, EXPONDIST, FISHER, FISHERINV, GAMMA, GAMMA.DIST, GAMMADIST, GAMMALN, GAMMALN.PRECISE, GAMMA.INV, GAMMAINV, GAUSS, BETA.DIST, BETADIST, BETA.INV, BETAINV, BINOM.DIST, BINOMDIST, BINOM.INV, BESSELI, BESSELJ, BESSELK, BESSELY, CHISQ.DIST, CHISQ.DIST.RT, CHISQ.INV, CHISQ.INV.RT, CHIDIST, CHIINV, F.DIST, F.DIST.RT, F.INV, F.INV.RT, FDIST, FINV, WEIBULL, WEIBULL.DIST, HYPGEOMDIST, HYPGEOM.DIST, T.DIST, T.DIST.2T, T.DIST.RT, T.INV, T.INV.2T, TDIST, TINV, LOGNORM.DIST, LOGNORMDIST, LOGNORM.INV, LOGINV, NORM.DIST, NORMDIST, NORM.S.DIST, NORMSDIST, NORM.INV, NORMINV, NORM.S.INV, NORMSINV, PHI, NEGBINOM.DIST, NEGBINOMDIST, POISSON, POISSON.DIST, LARGE, SMALL, AVEDEV, CONFIDENCE, CONFIDENCE.NORM, CONFIDENCE.T, DEVSQ, GEOMEAN, HARMEAN, CRITBINOM, COVAR, COVARIANCE.P, COVARIANCE.S, PEARSON, RSQ, STANDARDIZE, Z.TEST, ZTEST, F.TEST, FTEST, STEYX, SLOPE, CHITEST, CHISQ.TEST, T.TEST, TTEST, SKEW.P, SKEW, WEIBULLDIST, VARS, TINV2T, TDISTRT, TDIST2T, STDEVS, FINVRT, FDISTRT, CHIDISTRT, CHIINVRT, COVARIANCEP, COVARIANCES, LOGNORMINV, POISSONDIST, SKEWP. [#152](https://github.com/handsontable/hyperformula/issues/152) [#154](https://github.com/handsontable/hyperformula/issues/154) [#160](https://github.com/handsontable/hyperformula/issues/160)
- Added function aliases mechanism. [#569](https://github.com/handsontable/hyperformula/issues/569)
- Added support for scientific notation. [#579](https://github.com/handsontable/hyperformula/issues/579)
- Added support for complex numbers. [#281](https://github.com/handsontable/hyperformula/issues/281)

### Fixed
- Fixed a problem with dependencies not collected for specific functions. [#550](https://github.com/handsontable/hyperformula/issues/550) [#549](https://github.com/handsontable/hyperformula/issues/549)
- Fixed a minor problem with dependencies under nested parenthesis. [#549](https://github.com/handsontable/hyperformula/issues/549) [#558](https://github.com/handsontable/hyperformula/issues/558)
- Fixed a problem with HLOOKUP/VLOOKUP getting stuck in binary search. [#559](https://github.com/handsontable/hyperformula/issues/559) [#562](https://github.com/handsontable/hyperformula/issues/562)
- Fixed a problem with the logic of dependency resolving. [#561](https://github.com/handsontable/hyperformula/issues/561) [#563](https://github.com/handsontable/hyperformula/issues/563)
- Fixed a minor bug with ATAN2 function. [#581](https://github.com/handsontable/hyperformula/issues/581)

## [0.3.0] - 2020-10-22

### Added
- Added 9 text functions EXACT, LOWER, UPPER, MID, T, SUBSTITUTE, REPLACE, UNICODE, UNICHAR. [#159](https://github.com/handsontable/hyperformula/issues/159)
- Added 5 datetime functions: INTERVAL, NETWORKDAYS, NETWORKDAYS.INTL, WORKDAY, WORKDAY.INTL. [#153](https://github.com/handsontable/hyperformula/issues/153)
- Added 3 information functions HLOOKUP, ROW, COLUMN. [#520](https://github.com/handsontable/hyperformula/issues/520)
- Added 5 financial functions FVSCHEDULE, NPV, MIRR, PDURATION, XNPV. [#542](https://github.com/handsontable/hyperformula/issues/542)
- Added 12 statistical functions VAR.P, VAR.S, VARA, VARPA, STDEV.P, STDEV.S, STDEVA, STDEVPA, VARP, VAR, STDEVP, STDEV. [#536](https://github.com/handsontable/hyperformula/issues/536)
- Added 2 mathematical functions SUBTOTAL, PRODUCT. [#536](https://github.com/handsontable/hyperformula/issues/536)
- Added 15 operator functions HF.ADD, HF.CONCAT, HF.DIVIDE, HF.EQ, HF.GT, HF.GTE, HF.LT, HF.LTE, HF.MINUS, HF.MULTIPLY, HF.NE, HF.POW, HF.UMINUS, HF.UNARY_PERCENT, HF.UPLUS. [#543](https://github.com/handsontable/hyperformula/issues/543)

### Fixed
- Fixed multiple issues with VLOOKUP function. [#526](https://github.com/handsontable/hyperformula/issues/526) [#528](https://github.com/handsontable/hyperformula/issues/528)
- Fixed MATCH and INDEX functions compatiblity. [#520](https://github.com/handsontable/hyperformula/issues/520)
- Fixed issue with config update that does not preserve named expressions. [#527](https://github.com/handsontable/hyperformula/issues/527)
- Fixed minor issue with arithmetic operations error messages. [#532](https://github.com/handsontable/hyperformula/issues/532)

## [0.2.0] - 2020-09-22

### Added
- Added 9 text functions LEN, TRIM, PROPER, CLEAN, REPT, RIGHT, LEFT, SEARCH, FIND. [#221](https://github.com/handsontable/hyperformula/issues/221)
- Added helper methods for keeping track of cell/range dependencies: `getCellPrecedents` and `getCellDependents`. [#441](https://github.com/handsontable/hyperformula/issues/441)
- Added 22 financial functions FV, PMT, PPMT, IPMT, CUMIPMT, CUMPRINC, DB, DDB, DOLLARDE, DOLLARFR, EFFECT, ISPMT, NOMINAL, NPER, RATE, PV, RRI, SLN, SYD, TBILLEQ, TBILLPRICE, TBILLYIELD. [#494](https://github.com/handsontable/hyperformula/issues/494)
- Added FORMULATEXT function. [#422](https://github.com/handsontable/hyperformula/issues/422)
- Added 8 information functions ISERR, ISNA, ISREF, NA, SHEET, SHEETS, ISBINARY, ISFORMULA. [#481](https://github.com/handsontable/hyperformula/issues/481)
- Added 15 date functions: WEEKDAY, DATEVALUE, HOUR, MINUTE, SECOND, TIME, TIMEVALUE, NOW, TODAY, EDATE, WEEKNUM, ISOWEEKNUM, DATEDIF, DAYS360, YEARFRAC. [#483](https://github.com/handsontable/hyperformula/issues/483)
- Added 13 trigonometry functions: SEC, CSC, SINH, COSH, TANH, COTH, SECH, CSCH, ACOT, ASINH, ACOSH, ATANH, ACOTH. [#485](https://github.com/handsontable/hyperformula/issues/485)
- Added 6 engineering functions: OCT2BIN, OCT2DEC, OCT2HEX, HEX2BIN, HEX2OCT, HEX2DEC. [#497](https://github.com/handsontable/hyperformula/issues/497)
- Added a configuration option to evaluate reference to an empty cells as a zero. [#476](https://github.com/handsontable/hyperformula/issues/476)
- Added new error type: missing licence. [#306](https://github.com/handsontable/hyperformula/issues/306)
- Added detailed error messages for error values. [#506](https://github.com/handsontable/hyperformula/issues/506)
- Added ability to handle more characters in quoted sheet names. [#509](https://github.com/handsontable/hyperformula/issues/509)
- Added support for escaping apostrophe character in quoted sheet names. [#64](https://github.com/handsontable/hyperformula/issues/64)

### Changed
- Operation `moveCells` creating cyclic dependencies does not cause losing original formula. [#479](https://github.com/handsontable/hyperformula/issues/479)
- Simplified adding new function modules, reworked (simplified) implementations of existing modules. [#480](https://github.com/handsontable/hyperformula/issues/480)

### Fixed
- Fixed hardcoding of languages in i18n tests. [#471](https://github.com/handsontable/hyperformula/issues/471)
- Fixed many compilation warnings based on LGTM analysis. [#473](https://github.com/handsontable/hyperformula/issues/473)
- Fixed `moveCells` behaviour when moving part of a range. [#479](https://github.com/handsontable/hyperformula/issues/479)
- Fixed `moveColumns`/`moveRows` inconsistent behaviour. [#479](https://github.com/handsontable/hyperformula/issues/479)
- Fixed undo of `moveColumns`/`moveRows` operations. [#479](https://github.com/handsontable/hyperformula/issues/479)
- Fixed name-collision issue in translations. [#486](https://github.com/handsontable/hyperformula/issues/486)
- Fixed bug in concatenation + `nullValue`. [#495](https://github.com/handsontable/hyperformula/issues/495)
- Fixed bug when undoing irreversible operation. [#502](https://github.com/handsontable/hyperformula/issues/502)
- Fixed minor issue with CHAR function logic. [#510](https://github.com/handsontable/hyperformula/issues/510)
- Fixed `simpleCellAddressToString` behaviour when converting quoted sheet names. [#514](https://github.com/handsontable/hyperformula/issues/514)
- Fixed issues with numeric aggregation functions. [#515](https://github.com/handsontable/hyperformula/issues/515)

## [0.1.3] - 2020-07-21

### Fixed
- Fixed a bug in coercion of empty string to boolean value. [#453](https://github.com/handsontable/hyperformula/issues/453)

## [0.1.2] - 2020-07-13

### Fixed
- Fixed a bug in topological ordering module. [#442](https://github.com/handsontable/hyperformula/issues/442)

## [0.1.1] - 2020-07-01

### Fixed
- Fixed a typo in a config option from `useRegularExpresssions` to `useRegularExpressions`. [#437](https://github.com/handsontable/hyperformula/issues/437)

## [0.1.0] - 2020-06-25

### Added
- Core functionality of the engine;
- Support for data types: String, Error, Number, Date, Time, DateTime, Duration, Distinct Logical;
- Support for logical operators: =, <>, >, <, >=, <=;
- Support for arithmetic operators: +, -, *, /, %;
- Support for text operator: &;
- CRUD operations:
  - modifying the value of a single cell,
  - adding/deleting row/column,
  - reading the value or formula from the selected cell,
  - moving a cell or a block of cells,
  - deleting a subset of rows or columns,
  - recalculating and refreshing of a worksheet,
  - batching CRUD operations,
  - support for wildcards and regex inside criterion functions like SUMIF, COUNTIF,
  - named expressions support,
  - support for cut, copy, paste,
  - undo/redo support;
- Following functions: ABS(), ACOS(), AND(), ASIN(), ATAN(), ATAN2(), AVERAGE(), AVERAGEA(), AVERAGEIF(), BASE(), BIN2DEC(), BIN2HEX()BIN2OCT(), BITAND(), BITLSHIFT(), BITOR(), BITRSHIFT(), BITXOR(), CEILING(), CHAR(), CHOOSE(), CODE(), COLUMNS(), CONCATENATE(), CORREL(),
COS(), COT(), COUNT(), COUNTA(), COUNTBLANK(), COUNTIF(), COUNTIFS(), COUNTUNIQUE(), DATE(), DAY(), DAYS(), DEC2BIN(), DEC2HEX(), DEC2OCT(), DECIMAL(), DEGREES(), DELTA(), E(), EOMONTH(), ERF(), ERFC(), EVEN(), EXP(), FALSE(), IF(), IFERROR(), IFNA(), INDEX(), INT(), ISBLANK(), ISERROR(), ISEVEN(), ISLOGICAL(), ISNONTEXT(), ISNUMBER(), ISODD(), ISTEXT(), LN(), LOG(), LOG10(), MATCH(), MAX(), MAXA(), MAXPOOL(), MEDIAN(), MEDIANPOOL(), MIN(), MINA(), MMULT(), MOD(), MONTH(), NOT(), ODD(), OFFSET(), OR(), PI(), POWER(), RADIANS(), RAND(), ROUND(), ROUNDDOWN(), ROUNDUP(), ROWS(), SIN(), SPLIT(), SQRT(), SUM(), SUMIF(), SUMIFS(), SUMPRODUCT(), SUMSQ(), SWITCH(), TAN(), TEXT(), TRANSPOSE(), TRUE(), TRUNC(), VLOOKUP(), XOR(), YEAR();
- Support for volatile functions;
- Cultures supports - can be configured according to the application need;
- Custom functions support;
- Set http://docs.oasis-open.org/office/v1.2/OpenDocument-v1.2-part2.html as a standard to follow;
- Error handling:
  - Division by zero: #DIV/0!,
  - Unknown function name: #NAME?,
  - Wrong type of argument in a function or wrong type of operator: #VALUE!,
  - Invalid numeric values: #NUM!,
  - No value available: #N/A,
  - Cyclic dependency: #CYCLE!,
  - Wrong address reference: #REF;
- Built-in function translation support for 16 languages: English, Czech, Danish, Dutch, Finnish, French, German, Hungarian, Italian, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish, Turkish.
