Geocat-comp

Release notes:
- Dependency bugfix for v2021.05.0

Release notes:
- New functions `fourier_band_block`, `fourier_band_pass`, `fourier_filter`, `fourier_high_pass`, `fourier_low_pass` added through the `fourier_filters` module.
- New functions `actual_saturation_vapor_pressure`, `psychrometric_constant`, `saturation_vapor_pressure`, `saturation_vapor_pressure_slope` added through the `crop` module.
- New function `heat_index` added through the `heat_index` module.
- GeoCAt-f2py dependency for PyPI releases added.
- "How to cite" added into README file and documentations.

Release Notes:
- New functions:
- Note: Refer to [GeoCAT-comp API reference](https://geocat-comp.readthedocs.io/en/latest/api.html) for detailed information about below functions:
- `get_skewt_vars `
- `max_daylight` (Previously `daylight_fao56` in NCL)
- `showalter_index`

Developer Notes:
- pre-commit hooks configured for yapf and some other checks

Release Notes:
- New functions:
- Note: Refer to [GeoCAT-comp API reference](https://geocat-comp.readthedocs.io/en/latest/api.html) for detailed information about below functions:
- `interp_hybrid_to_pressure` (Previously `vinth2p` in NCL)

Developer Notes:
- Several badges for CI and docs statuses are added to `README.md`
- Dependabot integration added
- Upstream dev tests for `xarray` and `cf-array` added
- Code coverage reports added
- `/build_envs` folder content restructured & refactored
- Automatic CI tests (`ci.yml`) added

Release Notes:
- New functions:
- Note: Refer to [GeoCAT-comp API reference](https://geocat-comp.readthedocs.io/en/latest/api.html) for detailed information about below functions:
- `anomaly`
- `climatology`
- `dewtemp`
- Newer EOF analysis functions (`eofunc_eofs`, `eofunc_pcs`)
- `linint1`
- `relhum`, `relhum_ice`, `relhum_water`
- Functions listed to be deprecated (in the future releases):
- Older EOF analysis functions (`eofunc`, `eofunc_ts`)
- Function renamings:
- `grid2triple` renamed to `grid_to_triple`
- `linint2_points` renamed to `linint2pts`
- `triple2grid` renamed to `triple_to_grid`
- Note: Older function names are still supported but soon will be deprecated.

Developer Notes:
- GeoCAT-ncomp (and libncomp) dependency deprecated
- GeoCAT-f2py dependency integrated