Add registry class
Merge branch 'master' into per_context_registry_196
Add ExtensionRegistry
Hide uniform strategy from public API
Add StrategyRegistry
Add buffer strategy
Rename strategy to behavior
Merge branch 'master' into per_context_registry_196
Refactor NamedStrings
Merge branch 'master' into per_context_registry_196
Merge branch 'master' into per_context_registry_196
Fix includes
Merge pull request #198 from hpicgs/per_context_registry_196

Per context registry 196