Add in default precision and scale for int and long.
Tests for decimal arithmatic with other types.
Fix test failures.
fixes to SkipScanFilter for setting start/stop key, null handling, and incrementing while current row > start key
Rename the package from arithmatic to arithmetic
Merge branch 'master' into scale
Update README.md
Merge pull request #108 from tonyhuang/scale

Add in default precision and scale for int and long.