cmkr: allar útgáfur og eldri útgáfur

What's Changed
- Fix warnings when options are not prefixed with the project name by @ZehMatt in #196
- Fix a regression that no longer warns if condition is manually defined by @ZehMatt in #197
- Add CMakeUserPresets.json to generated .gitignore by @mrexodia in #199
- Automatically create .gitignore in CMAKE_BINARY_DIR by @de-ep in #200
- Custom commands by @mrexodia in #198
- Report missing source directories clearly by @aouxwoux in #201
- Suggest valid target keys for common typos by @aouxwoux in #202

New Contributors
- @aouxwoux made their first contribution in #201

## What's Changed

- fix #172 by @d06i in #180
- fix #186 by @de-ep in #191
- Add support for [target].dependencies by @mrexodia in #194
- Support TOML 1.1.0 by @mrexodia in #193
- Add support for conditional [project].languages by @mrexodia in #195

## New Contributors

- @d06i made their first contribution in #180