include 3.4 test results

fix issue arangodb#242

handle 503 responses also in single-server case

Merge branch 'devel' of https://github.com/arangodb/arangodb-php into…

… 3.3

use different root user passwd

updated CHANGELOG

[Readme] Correct name in composer inclusion

slightly changed wording in CHANGELOG

Fixed bug related to creating the correct collection type. This was n…

…o problem for the default, which is 'document', but it was a problem when the option 'createCollection'=>true was passed with save_edge().

Release 3.0.7