Cleanup JS
WP 3.5: Attachment metadata
Use submit_button() on builder form
Builder: Enable metabox configuration for attachment metadata
Fixed post metadata saving
Post metadata

Support excluding sections/fields based on post mime type for attachments
Fixed script and style loader
Fixed Multiinput sortable handler
Compress scripts
Fixed kc_array_rebuild_index()
Improved _kc_sanitize_value()
Replace jquery-colorpicker with wp-color-picker
Fixed date and color input polyfills caller
Cleanup scripts and styles registration
Update jQuery UI css
Fixed wp-color-picker style
Fixed color inputs style
Fixed color inputs style
Bump version: 2.8
Fixed multiple files upload buttons style