ArangoDB 2.2.2

[Frank Celler]

A maintenance release of ArangoDB 2.2 is available via the package manager or from our download page.

v2.2.2 (2014-08-08)
-------------------

* allow storing non-reserved attribute names starting with an underscore

  Previous versions of ArangoDB parsed away all attribute names that started with an 
  underscore (e.g. `_test', '_foo', `_bar`) on all levels of a document (root level
  and sub-attribute levels). While this behavior was documented, it was unintuitive and
  prevented storing documents inside other documents, e.g.:

      {
        "_key" : "foo",
        "_type" : "mydoc",
        "references" : [
          {
            "_key" : "something",
            "_rev" : "...",
            "value" : 1
          },
          { 
            "_key" : "something else",
            "_rev" : "...",
            "value" : 2
          }
        ]
      }

  In the above example, previous versions of ArangoDB removed all attributes and
  sub-attributes that started with underscores, meaning the embedded documents would lose
  some of their attributes. 2.2.2 should preserve such attributes, and will also allow
  storing user-defined attribute names on the top-level even if they start with underscores
  (such as `_type` in the above example).

* fix conversion of JavaScript String, Number and Boolean objects to JSON.

  Objects created in JavaScript using `new Number(...)`, `new String(...)`, or
  `new Boolean(...)` were not converted to JSON correctly.

* fixed a race condition on task registration (i.e. `require("org/arangodb/tasks").register()`)

  this race condition led to undefined behavior when a just-created task with no offset and
  no period was instantly executed and deleted by the task scheduler, before the `register`
  function returned to the caller.

* changed run-tests.sh to execute all suitable tests.

* switch to new version of gyp

* fixed upgrade button