heap-1.0.1: changes

Latest version: 1.0.1

1.0.0 --> 1.0.1
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- set Data.Heap.Item to Trustworthy to enable usage of Data.Heap in Safe Haskell (trustworthy is required due to rewrite rules)
- changed the INLINE pragma for splitF to INLINE[1] (GHC warned about the rule possible not firing)
- fixed QuickCheck tests to work with QuickCheck > 2.2