Added lockfile error stat emission to the acquisition method.
Made exception logs warnings, included error message in lockfile timeout exception, added path to unhandled lockfile exceptions.
Fixed indentation, changed exception logging to _lockfile
changed version in setup.py to prep for release.
updated version number in conf.py
Merge pull request #3 from krux/OPS-686-add-stats-to-lockfile-emission

Added lockfile error stat emission to the acquisition method.