Added padding for columns not found in file schema
Merge pull request #392 from egonina/stats

Value stats fixes
Added test for null padding
Merge pull request #389 from dcw-netflix/pad-schema

Added padding for requested columns not found in file schema
Fixed issue with column pruning when using requested schema
Updated test and remove shortcut return statement in loader
Merge pull request #397 from dcw-netflix/requested-schema-pruning

Fixed issue with column pruning when using requested schema
fix null stats
merging with fix_null_stats branch
Merge branch 'master' of https://github.com/Parquet/parquet-mr into stats
Bug fix - resetting stats after writing page. Fixed unit test to test reading footer