0.2.0 Multistatement support

What's Changed

• Fix actions by @zifter in #3
• Add CI badge to readme by @zifter in #4
• Add executable by @zifter in #5
• Add migrations storage, it will helps to work with migrations to apply by @zifter in #6
• Last refactoring by @zifter in #7
• Mutlistatement by @zifter in #8

Full Changelog: https://github.com/zifter/clickhouse-migrations/commits/0.2.0