Merge pull request #129 from frankmayer/devel

changed PhpDocs @package content to triagens\ArangoDb, closes issue #123
Branch 1.3 (Release 1.3.0)
Added time taken to the tracer.
Merge pull request #131 from F21/timetaken

Added time taken to the tracer.
Fixed AQL user function's register() not using supplied arguments.
Fixed the actual bug itself.
Fixed the test.
Merge pull request #132 from F21/fix_aql_functions_bug

Fixed AQL user function's register() not using supplied arguments.
Fixed getRegisteredAQLFunctions() not using the $namspace for filtering.
Merge pull request #136 from F21/fix_get_aql_functions_bug

Fixed getRegisteredAQLFunctions() not using the $namspace for filtering.
Added support for deleting all registered functions in a namespace.
Merge pull request #137 from F21/delete_aql_functions_by_namespace

Added support for deleting all registered functions in a namespace.
Use ArangoDB 1.3.1.
Unix EOL.
Merge pull request #138 from F21/devel

Update travis to use 1.3.1.
fixed error message expectation
performance optimisations (only visible if many requests go over one connection)
Fixed enhanced tracer headers that got broken in
f98463250eae1aa1fd1d510b7aeb412b36438436.
PHP 5.3 compatibility.
Fixed tests.