0.3.2

Improvements

• Add a new command for inserting Markdown / Pandoc citations, e.g. of the form [@citekey2000]. This command is called "Insert Markdown citation" and is not assigned a hotkey by default. Users can also define a secondary Markdown citation format and insert it by using the same command, but pressing Shift+Enter. (cf. #24)
• Show an error when literature notes cannot be created. This helps fix lots of previously-invisible issues with non-existent literature note directories. (#13)
• Minor bugfixes.