Res2df

Bugfixes
* Handle defaulted coordinates in WELOPEN (item 3-5)
* Support two-phase dry gas in fipreports

**Full Changelog**: https://github.com/equinor/ecl2df/compare/v0.15.0...v0.16.0

New features
* Support writing smry and grid data to arrow format
* New submodule, wellconnstatus, for calculating states through time for invidividual connections from summary data
* Log messages will be split between stdout and stderr for the command line tool based on log severity.

Bugfixes
* WELOPEN parsing has been aligned with Eclipse's behaviour.
* Duplicated summary columns are detected and handled.
* summary will no longer raise an exception when no columns are chosen
* Fix 1OVERBO in pillars.

**Full Changelog**: https://github.com/equinor/ecl2df/compare/v0.14.0...v0.15.0

Improvements:
* [satfunc] Defaulted values in parsed saturation tables will be linearly interpolated.
* [compdat] Added support for WLIST
* [compdat] Added support for COMPLUMP
* [compdat] Added support for wellname wildcars in WELOPEN
* [gruptree] Add support for BRANPROP and NODEPROP
* All modules will now export empty dataframes to a CSV file when relevant (previously only some did)

Bugfixes:
* [rft] Fixed export of extra csv files in debug mode
* [grid] datetime.datetime did not work for API users. Fixed.
* [summary] Fixed problem with dates beyond year 2262 and end-dates not on frequency boundary.

Bugfix release:
* Make --stackdates work as intended for ecl2csv grid
* Support time interpolations beyond year 2262 in summary
* Do not remove completions from multiple wells into the same cells in compdat.

Bugfixes:
* Fix crash in fipreports on rogue Eclipse output

Improvements:
* Support OPM flow PRT output in fipreports.

Changes:
* The column ACCURACY in the dataframe from the equil module has been renamed to OIP_INIT

Improvements:
* The grid module outputs Z_MIN and Z_MAX also for every cell row.
* lyr files (which links zone names to k-layers) supports colour metadata.

Installation:
* ert is now an optional dependency, and will no longer be installed by default.