What's Changed
* Drop support for Python 3.6. Python 3.7 to 3.11 are supported.
* As a consequence of skipping Python 3.6, Python in RMS 12.0 (Roxar API version 1.4) and earlier is not supported from this version.
* Functions and methods with deprecation warnings marked for removal in xtgeo 3.0 are now removed. These are:
* Grid() class: `numpify_carrays(), get_cactnum(), get_indices()`
* BasePlot() class: `set_colortable()`
* RegularSurface() class: `get_zval(), set_zval(), ensure_correct_values()`, use of `nx, ny` in class instantiating (use `ncol, nrow` instead)
**Full Changelog**: https://github.com/equinor/xtgeo/compare/2.21.3...3.0.0