fix for possibly invalid core calculation
Fix an inconvenience that everything was a target
Merge pull request #267 from bastih/master

Fix an inconvenience that everything was a target
Alleviate major grievances - casts in AbstractTable no longer fail silently
Merge pull request #268 from bastih/master

Alleviate major grievance - casts in AbstractTable no longer fail silen...
Add LIKE and IN expression

Like Expression for strings comparison with regex syntax.
In Expression: takes an array of selected value type and checks for fields that match one of these values.
Merge pull request #265 from kateyy/feature/Like_In_Expressions

Add Like and In Expression
Implement concurrent facilities for Store

* Introduce ConcurrentUnorderedDictionary, a concurrent insertion safe
  dictionary.

* Introduce ConcurrentFixedLenghtVector, a storage structure that may be
  grown safely by multiple threads

* Add AbstractTable::copy_structure with callbacks for backing
  structures, allowing Store to use concurrent structures

* Add AbstractFixedLengthVector so that ConcurrentUnorderedDictionary
  may safely fill in where FixedLengthVector was used
Merge pull request #258 from bastih/feature/concurrent_delta

Concurrent delta
Adds new algorithm to intersect position lists and fixes bug in PointerCalculator for intersects
Merge pull request #234 from hyrise/feature/intersect_positions

Fixes bug in IntersectPositions and adds functionality to intersect multiple PCs
Adds lots and lots of namespaces ... and some related things:

* more pragma once
* more auto (where namespaces would just have to been verbosely written)
* some lines removed (if obviously unnesessary and namespaces would have to be
   applyed)
* removed some now unnessesary namesapce references (mostly "hyrise::")
Fixed concurrency issue in InsertScan and PosUpdateScan:
Thread A: fetch before_size
Thread B: fetch before_size
B: append_to_delta
A: append_to_delta
For A, before_size+i is not the correct way to address its new rows anymore
Merge pull request #272 from lordgeorg/namespaces

More consequent namesapces in hyrise
Merge pull request #273 from hyrise/fix-insertscan-concurrency

Fixed concurrency issue in InsertScan and PosUpdateScan:
Prevent 'maybe uninitialized error' and improve error handling
Remove some old files
Merge pull request #274 from bastih/master

Mini fixes and cleanups
Fix namespaces in storage
Cleanup namespace transition in io