Remove Optional from FormattingCode, it is always present
Rename Message to Text and fix some missing usages of Text
Rename Text.Raw to Text.Plain to make it more clear
Merge branch 'master' into feature/text
Remove type parameter of Text
Improve Text Javadocs
Rename Text to Message, add some Javadocs
Improve Text API Javadocs.
Merge branch 'feature/text'