Merge pull request #110 from frankmayer/devel

Transaction support and version update
Merge pull request #112 from frankmayer/devel

Bug Fixes mainly involving returned object type
Merge pull request #113 from frankmayer/devel

Reimplemented statistics according to new implementation in ArangoDB 1.3
Merge pull request #114 from frankmayer/devel

Some minor additions and fixes
Merge pull request #115 from frankmayer/devel

Some more minor modifications to transactions
Merge pull request #116 from frankmayer/devel

Initial AQL user functions implementation
PSR-2 formatting.
Merge pull request #118 from F21/formatting

PSR-2 formatting.
Cleaning spree => lib
Cleaning Spree => Tests
Cleaning spree => examples
PSR-2 and beautifications