Revision history for threads-lite

0.021      2010-03-24
           Fixed locking during destruction time.
           Refactored and documented parallel_map and tids.
           Made requirement on perl 5.10 more explicit.

0.020_002  2010-03-23
           Documentation updates

0.020_001  2010-03-22
           Complete rewrite of thread creation routines

0.010_001  2009-08-17
           First version, released on an unsuspecting world.