Adding lz4 compression library to README
Merge pull request #34 from copious/chore/lz4-in-readme

Adding lz4 compression library to README
Allow lz4 compression to be specified as 'lz4' instead of 'l4z' to avoid confusion.
Update sessionStats.php to allow group by any key.
Allow choice of sort parameter for session stats.
Apply firt write lifetime to second write, multiplied by two.
Fix timing reports. Fixes #35
Falls back to mysql handler if redis_session isn't configured.
Merge pull request #37 from aingram/master

Falls back to mysql handler if redis_session isn't configured.
Log error when falling back to MySQL handler.
Merge pull request #38 from colinmollenhour/patch-1

Log error when falling back to MySQL handler.
getLifeTime now works properly if redis_session wasn't configured
Merge pull request #39 from aingram/master

getLifeTime now works properly if redis_session wasn't configured
Fix initial sleep time, clean up debug logging.
Get and cache lifetime after successful read.
Fix regression with session lifetime calculation.
Merge pull request #2 from colinmollenhour/master

Pull from origin