cleanup temporary files in test suite
Merge pull request #29 from eserte/temp-cleanup

cleanup temporary files in test suite
A failing test. The Pod says it all.
Put TODO wrapper around failing tests.
_load_string: Save $@ so we don't generate misleading error messages if $@ is clobbered.
Test whether we detect duplicate keys in mappings
Check mappings for unique keys
Merge pull request #31 from hillu/errors

_load_string: Save $@ so we don't generate misleading error messages if ...
Merge pull request #32 from hillu/dupkey

Add duplicate key check for mappings (hashes)
changelog for recent changes
YAML-Tiny-1.63

        [FIXED]

        - incorrect error messages fixed, when $@ is clobbered when Carp
          wasn't loaded (GH#30, GH#31, Hilko Bengen)

        [CHANGED]

        - now checking for, and erroring on, duplicate keys found in a hash
          (GH#32, Hilko Bengen)