daisy202-to-epub3 refactoring
Improved fileset-filter performance. Added dependency check script.
minor simplification
fixed performance issue in px:mediatype-detect (now only loads xml)
Merge branch 'daisy202-to-epub3-refactoring' of https://github.com/daisy-consortium/pipeline-modules-common into daisy202-to-epub3-refactoring
some fileset-filter cleanup
Merge pull request #1 from daisy-consortium/daisy202-to-epub3-refactoring

DAISY 2 to EPUB 3 - refactoring