v0.6.3: Rails 7 support & Twitter Text 2+

• Relax dependency pinning to support Rails 7 by @cbeer in #65
• Update to twitter-text 2+ by @cbeer in #66

v0.6.2: Support for superscript tag

Allow sup tag when formatting text to match the recent sir-trevor-js update

v0.6.1: Support for Rails 6

Relax dependencies to support Rails 6

v0.6.0: Set custom block types (#57)

* Speed up block detection by eliminating NameError were possible

* Add readme for 0.6

* Tabs for spaces in changelog