Development version
Add release step
Change comment style in old plugins
Fully support MediaWiki's handling of contiguous whitespace

Fixes #118
ArchWikiFixHeader: several improvements
Interlanguage: better handle whitespace and URL encoding/decoding
Fix(Backlink)Fragments: improve flexibility in handling whitespace

Fixes #127
Use the JSON interface for official packages

Unfortunately it doesn't support querying package groups yet
Addresses #129
Update compatibility configurations
Move RELEASE step
Prepare 1.13.2