Merge branch 'release/0.4.0' into develop
Changed references to Siesta in readme to use Chrono instead [ci skip] (fixes #46)
Improved API generation.
Merge pull request #47 from ezzatron/feature/improved-api

Improved API generation.
Bumped version number.
Added all non-vendor namespace atoms to title, decreased open level by 1.
Improved doc titles/opened level when vendor namespace is absent.
Updated changelog.
Merge branch 'release/0.4.1'