Gersemi

Fixed
- warn about conflicting definitions for macros and functions, make usage of conflicting definitions consistent and deterministic (11)

Changed
- allow PyYAML version 6 as a dependency

Added
- support for new keywords in native commands available in CMake 3.27

Added
- Support for alternative style that favours list expansion for multi-value arguments (keyworded or standalone) through `--list-expansion=favour-expansion` command line argument or `list_expansion: favour-expansion` entry in `.gersemirc`. The explanation of the new style is available in the README. The original formatting style will be still the default one but it can be set explicitly through `--list-expansion=favour-inlining` or `list_expansion: favour-inlining`.

Added
- support for new keywords in native commands available in CMake 3.26

Added
- support for block/endblock pair
- support for new keywords in native commands available in CMake 3.25