Release v3.0 · Mord3rca/gamma-launcher

What's Changed

Fix contributing doc by @Mord3rca in #262
Report progress during long-running git fetch by @aleksandrmakarov-ci in #263
Simplifying progress bar logic with tqdm by @Mord3rca in #264
Rework mods objects & creating test unit by @Mord3rca in #268
check-md5: Yes ... It was this easy. by @Mord3rca in #269
launcher.commands.install: Adding a mod counter during installation by @Mord3rca in #270
Adding cleanup argument for launcher.commands.check by @Mord3rca in #272
Adding docstrings by @Mord3rca in #273
Setting version to 3.0 by @Mord3rca in #274

Full Changelog: v2.6...v3.0