bumped version to 1.5.0, added changelog

bumped version to 1.3.0

Merge pull request tinytag#78 from timgates42/bugfix/typo_stability

Fix small typo: stabiity -> stability

bumped version to 1.2.2

bumped version to 1.2.1

bumped version to 1.2.0

bumped version to 1.1.0

bumped version to 1.0.1

updated changelog