Changelog
---------
v0.5.9 - added support for migrating unlimited nesting level mail aliases for two database back-ends
v0.5.5 - added $UID token to fill in user UIDs
v0.5.4 - added the ability to process data through pipes and necessary command line switches,
	 ability to use/ignore configuration filters in pipe mode, fixed a small leak in regex
	 processing
v0.5.1 - fixed a conf parsing bug and password sanitization under BSD-style systems
v0.5.0 - duplicate entry removal; regex entry filtering; added support for selectively logging 
         dropped entries; improved "general purpose" sanitization; added a (hopefully useful) stats 
         screen; modified the filter chain behavior; account status is now optionally automatically 
         filled in; all shadow field targets are now supported; user specifiable crypt scheme
v0.4.1 - added UID range based account filtering
v0.4.0 - token based, parsed ldif template ensures easy extensibility to any number of LDAP profile 
         entries; increased processing speed; removed the (now useless) stub section; split the ldif 
         template and program configuration into different files
v0.3.0 - first public release; using arbitrary input files; sanity check; using stub section; 
         processing timer; support for BSD-style systems
v0.2.0 - fixed a disgusting leak, modified password processing
v0.1.0 - first unpublic release

