lib: mention format support
lib: preserve whitespace in templates
bin: support json format
lib: v1.1.0
Readme: tech information at the top.
Mention support for json

Closes #264
Add Wercker support

Resolves badges/shields#265
Wercker: try / catch and URL change to /wercker/ci/

Closes #290 and closes #265.
Hard heap size limit for the LRU cache
Reorder some things
Wheelmap support

Closes #287.
Travis: support pull request based tests