v1.2.0

What's Changed

• re-add test for context rendering by @wolfv in #46
• support for simple recipe modifications by @wolfv in #47
• start adding some more tests for version updates by @wolfv in #48
• use sandboxed Jinja env by @wolfv in #49
• fix: use none as default arg to split by @wolfv in #50
• feat: move all YAML stuff to ruamel by @wolfv in #51
• release 1.2.0 by @wolfv in #52

Full Changelog: v1.1.1...v1.2.0