* ValidatePositions can now be used with Stores
  * GroupByScan without Hashing for ops without grouping
  * Fixing bug in tablebuilder that would build a wrong layout, but correct view on top of it
  * Fixing default merge settings in Store, to not use compression
  * Made the code compiling without precompiled headers by including the necessary includes
Merge pull request #176 from hyrise/feature/updates_to_querying_in_tx

Feature/updates to querying in tx
Added Metadata Operator with documentation and tests
Merge pull request #188 from irruputuncu/master

Added MetaData Operator with docs and test
tpccTableLoadTest.cpp now looks less copy-paste like
Merge pull request #190 from kateyy/tpccTableLoadTest

refactored TpccTableLoadTest