v0.12.0

Minor Enhancements

• compose command for collections (#103)
• Add rename command to change titles and filenames (#101)
• Support a custom timestamp format in YAML front matter on posts (#98)
• Include VISUAL as an editor option (#102)
• Prepare for collections support with default front matter configuration (#104)

Bug Fixes

• Removing source option for commands as it is appearing twice. (#100)

Development Fixes

• ci: test with Jekyll 4.0 (#99)
• Extract logic for computing default front matter (#105)
• Refactoring to remove some rubocop warnings and for consistency (#106)