#52 : wire resilience strategy in to cache methods
#52 add robust resilience strategy abstract super, and logging sub impl
#52 : some stability tweaks to the iterator logic
#52 create a RecoveryCache interface for the robust resilience strategy
#52 : add getAllFailed variant for when bulk cache load suceeds
#52 : add ResilienceStrategy javadoc
#52 : don't call recovered if inconsistent completes normally
#52 : clarify 'knownToBe' parameter contract
#52 : add missing get with loader error path
#52 : add javadoc clarifying writer/loader and resilience strategy interactions
Merge pull request #164 from chrisdennis/issue-52_resilience_strategy

Issue 52 Resilience Strategy
rework of getAll()