Implemented erase_Locked.
Brain-dead LookUp implementation.
Implemented NewLruCache.
LruCacheTest.InsertNilValue
Check for nil.
LruCacheTest.ExpiresLeastRecentlyUsed
LruCacheTest.Overwrite
Refactored.
Trim when necessary.
Promote on lookup.
Check invariants when unlocking.
LruCacheTest.SafeForConcurrentAccess
Fixed a deadlock.
Fixed a test bug.
Tuned test.
Split test names.
LruCacheTest.Encode_EmptyCache
LruCacheTest.Encode_PreservesLruOrder
Added a half-assed gob encoding implementation.
Fixed some encoding errors.