3.9.0.2
Lua: use proper interface functions to access the CommonState.
Lua: add new function `pandoc.types.Sources`.
Lua: support custom bytestring readers.
Add test for custom bytestring writers
Lua: rename `reader_extensions`/`writer_extensions` globals...
Support complex figures. [API change]
[API Change] Extract Lua code into new package pandoc-lua-engine
Lua: support `-D` CLI option for custom writers [API change]