Release v1.1

Added

• New macro \subtitle (#44)
• New Keyword delimiter \and (#43)
• New files CHANGELOG.md and CONTRIBUTING.md
• New option crop for crop marks
• Check for latest German hyphenation patterns (#47)

Changed

• CTAN script to include new files
• Documentation

Fixed

• Definition of \Crefname to always get "Abb." instead of "ABB." etc. (#45)