remove used function from sha.erl module
remove pubsub tables from schemas
return binary from sha:sha/1
Merge pull request #335 from esl/remove-pubsub-tables

remove unused pubsub tables from schemas

[skip ci]
Remove jenkins build status
add spec to sha module
Rename sha exports to be more semantic, add test suite
Add property for well-formed output on all inputs
Refactor presence probe handling
Add missing base16 lib to relfile, remove unneeded test code
Re-enable coverage
Merge pull request #336 from esl/remove-unused-sha

remove used function from sha.erl module
Merge pull request #337 from esl/refactor-presence-probes

Refactor presence probe handling
generate release based with required deps only
create minimal required rels on travis