Incremental regeneration
Refinements
Add regenerate front-matter variable
Fix failing tests
Implement @mattr-'s suggestions
Add clean command
Handle path overrides
Add --no-metadata option
Use site.in_source_dir
Implement more suggestions
Add unit and cucumber tests
Perform less expensive operation first
Add lots more unit tests
Last few revisions
Add incremental rebuild info to build command output
Always regenerate asset files
Fix indentation
Add @alfredxing to the @jekyll/core team.
Merge pull request #3218 from jekyll/alfredxing
Update history to reflect merge of #3218 [ci skip]