Promote repositories to 0.1.x

[rdhyee]

Our process for generating epub for almost all of the Second Folio books is good enough to now promote version to 0.1.x. Specifically:

• mark version in metadata.yaml to 0.1.0 (or 0.1.x)
• include the GITenberg keyword
• add a webhook notification to https://unglue.it/api/travisci/webhook in each .travis.yml so the repos get loaded to unglue.it