random sampling
changes to local copy of hl7
need to clear room to add subtree
Squashed 'lib/hl7/' content from commit 17b3141

git-subtree-dir: lib/hl7
git-subtree-split: 17b314131bf2ca153528d904d24221e0a563921a
Merge commit '73a3cc2ce7f93266eb40ec18b41a49d5079386b4' as 'lib/hl7'
changes to subtree
leaning up recordcomparer
cleaning up RecordComparer