v1.2.0

This is a minor release.

New features

• Add previous and new theme name in the custom event (a34af81)

Other

• Allow invalid strings as the value of theme key in storage (453bc60)
• Add some minor code improvements (6d8bc9c, 074b33f, 8c3082b, 104c2ef)

All commits since version 1.1.0