bumped to 0.6.1
 * moved the docker image sources into their own module
 * added a zip of the docker sources to the 'cli' artifacts
 * removed all the build steps from the root project
changed version to 0.6.1, as NPM requires a three-part version number
if the docker image isn't present, automatically create it from the now-bundled sources
added transformSource method for transforming the source file before transcoding, and made the abstract getters protected instead of public
moved source transformation to after target derivation, so the target is always based off the literal source (not the transformed one)
added the tag to the image to launch
added a separators option for the @Parameters annotations everywhere
converted the --print option for 'compose' to a --bleed option on 'pdf'
removed the unused rotation stuff
allow setting the bleed when invoking 'addBleed'