Bumped dependencies.
Added changelog for 0.5.
Bumped v0.5.0-pre.2
Improved CHANGELOG.
Added json validation of the default config.
Bumped v0.5.0-pre.3
Bumped v0.5.0-pre.4.
Bumped v0.5.0-pre.4
Bumped v0.5.0-pre.6
v0.5.0