Enable date based archiving.
archiveNumbering can be set to Date.
archiveFileName should contain the standard {#} placeholder for numbers which will now be used to store the archive date.
archiveDateFormat can optionally be specified for a custom date format.
maxArchiveFiles will be honored and old files deleted when applicable (based on archive period)
Merge pull request #241 from mkaltner/master

Date Based File Archiving