Update the changelog.

Author: GraylinKim

CHANGELOG.md

@@ -4,12 +4,15 @@ CHANGELOG
 0.5.1 - In progress
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+* Fixes several game event parsing issues for older replays.
+* Propperly maps ability ids for armory vehicle & ship armor upgrades.
+* Uses the US depot for SEA battle.net depot dependencies.
 * ``PlayerStatEvent.food_used`` and ``food_made`` are now properly divided by 4096, 3e314e81796c41f01ac116e3a115a03ffb883b3f
 * ``AbilityEvent.flags`` are now processed into a dictionary mapping flag name to True/False (``AbilityEvent.flag``), a515bfa886b355a0e18497497c57eb252a4496ef
 * Fixed error preventing UnitOwnerChangeEvents from being processed, ee0fc50caea5bc00dd94487791edaa8515b1cc35
 * Fixed the toJSON plugin and adds new fields, 7cef03efded356f6af5e932c06241583f3f52c26
 * Fixed error preventing parsing of MapHeader (s2mh) files
-* APMTracker now ....
+* APMTracker now properly calculates average APM to the last second played by each player instead of using the number of replay minutes in the denominator.
 
 0.5.0 - May 7, 2013
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