Test for broken find while references are duplicated
Groups macros in a single header
Ignores duplicate references. Fixes #2.
Merge branch 'master' into fix/broken-find-for-duplicate-references

Conflicts:
	ext/blurrily/storage.c
Fixes broken spec, adds missing spec (API change for Map#put)
Merge pull request #11 from mezis/fix/broken-find-for-duplicate-references

Fixes broken put/find for duplicate references