Formulas

-------------------

Feat
~~~~
- (doc) :gh:`23`: Enhance `ExcelModel` documentation.


Fix
~~~
- (core): Add python 3.7 and drop python 3.4.

- (excel): Make `ExcelModel` dillable and pickable.

- (builder): Avoid FormulaError exception during formulas compilation.

- (excel): Correct bug when compiling excel with circular references.

-------------------

Fix
~~~
- (tokens) :gh:`20`: Improve Number regex.

-------------------

Feat
~~~~
- (excel) :gh:`16`: Solve circular references.

- (setup): Add donate url.


Fix
~~~

- (functions) :gh:`18`: Enable `check_error` in `IF` function just for
the first argument.

- (functions) :gh:`18`: Disable `input_parser` in `IF` function to
return any type of values.

- (rtd): Define `fpath` from `prj_dir` for rtd.

- (rtd): Add missing requirements `openpyxl` for rtd.

- (setup): Patch to use `sphinxcontrib.restbuilder` in setup
`long_description`.


Other
~~~~~
- Update documentation.

- Replace `excel` with `Excel`.

- Create PULL_REQUEST_TEMPLATE.md.

- Update issue templates.

- Update copyright.

- (doc): Update author mail.

-------------------

Feat
~~~~
- (functions) :gh:`14`: Add `ROW` and `COLUMN`.

- (cell): Pass cell reference when compiling cell + new function struct
with dict to add inputs like CELL.

Fix
~~~
- (ranges): Replace system max size with excel max row and col.

- (tokens): Correct number regex.

-------------------

Feat
~~~~
- (contrib): Add contribution instructions.

- (setup): Add additional project_urls.

- (setup): Update `Development Status` to `4 - Beta`.


Fix
~~~

- (init) :gh:`15`: Replace `FUNCTIONS` and `OPERATORS` objs with
`get_functions`, `SUBMODULES`.

- (doc): Correct link docs_status.

-------------------

Feat
~~~~
- (readme) :gh:`6`, :gh:`7`: Add examples.

- (doc): Add changelog.

- (test): Add info of executed test of `test_excel_model`.

- (functions) :gh:`11`: Add `HEX2OCT`, `HEX2BIN`, `HEX2DEC`, `OCT2HEX`,
`OCT2BIN`, `OCT2DEC`, `BIN2HEX`, `BIN2OCT`, `BIN2DEC`, `DEC2HEX`,
`DEC2OCT`, and `DEC2BIN` functions.

- (setup) :gh:`13`: Add extras_require to setup file.


Fix
~~~
- (excel): Use DispatchPipe to compile a sub model of excel workbook.

- (range) :gh:`11`: Correct range regex to avoid parsing of function
like ranges (e.g., HEX2DEC).