0.7.4
=====

reduce logging noise


0.7.3
=====

fix bug when reporting pid file problems


0.7.2
=====

most logging is now debug level
break_lock always succeeds, may log a warning
only release owned locks


0.7.1
=====

allow reentrancy in PidLockFile via the context manager protocol
automatically print error report if daemon fails during activation
fix break_lock error reporting, etc.
save last read pid as attribute of PidLockFile


0.7.0
=====

changed 'time_out' parameter to 'timeout' to be consistent with the stdlib
