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Revision history for Hash-SafeKeys

0.04	2016-06-23
	improve performance for calling functions in scalar context
	expose,test,doc save_iterator_state, restore_iterator_state functions

0.03	2012-12-02
	remove test that depends on two identical hashes returning
	keys in the same order. That feature will break in 5.18.
	No code changes.

0.02	2012-06-12
	Backport to Perl v5.6.
	Added warning messages that no one should ever see.

0.01	2012-06-07
	safekeys, safevalues, safecopy functions