1.12.0

• New feature: toggle case (cycles between uppercase, lowercase and title case – contributed by @MatthewAlner)
• New feature: toggle line numbers
• New feature: indent using spaces/tabs (note that this doesn't convert any existing indentation)
• Enhancement: automatically insert markdown checklist prefix when inserting a line above/below within a checklist
• Enhancement: automatically remove markdown checklist prefix when joining lines
• Bug fix: dividers are no longer treated as list items when inserting markdown list prefix