bump version, license

Merge branch 'dev'

testing routes with unittest

better py3 coverage; added head method; switching datetime utils

no exit in libs, raise instead

better config; dockerfile

strip path from filename; cache control; py3 loading of images

version bump

closing upload connection

progress is optional to turn on

updating requirements; add progress bar for up/down-load

using streaming requests for up/down-load

adding notes about rate-limiting and ssl

moved to package_data, vbump

fixing distribution of extra files with manifest, version bump