Added -D no_map_cache, which disables the cachedIndex/cachedKey logic from Map implementations. These are not safe in multithreaded environments, where you would expect read-only access to a Map to be safe.
[cs] Added classes for ObjectMap iterators
Merge branch 'development' of https://github.com/proletariatgames/haxe into no_map_cache
Formatting cleanup
Merge pull request #3580 from proletariatgames/no_map_cache

C#: Optionally disable lookup caching in C# Map implementations