Reorganize project while attempting to maintain as much backwards compatibility as possible

arango/__init__.py

@@ -1,2 +1,4 @@
-from arango.client import ArangoClient  # noqa: F401
-from arango.exceptions import ArangoError  # noqa: F401
+from arango.utils.lock import RLock  # noqa: F401
+from .request import Request  # noqa: F401
+from arango.api.wal import WriteAheadLog  # noqa: F401
+from .client import ArangoClient  # noqa: F401

arango/api/__init__.py

@@ -0,0 +1 @@
+from .api import APIWrapper

arango/api/api.py

@@ -0,0 +1,18 @@
+from abc import ABCMeta
+
+
+class APIWrapper:
+    __metaclass__ = ABCMeta
+
+    def __init__(self, connection):
+        self._conn = connection
+
+    def handle_request(self, request, handler, job_class=None,
+                       use_underlying=False, **kwargs):
+        if use_underlying:
+            connection = self._conn.underlying
+        else:
+            connection = self._conn
+
+        return connection.handle_request(request, handler, job_class=job_class,
+                                         **kwargs)

arango/api/collections/__init__.py

@@ -0,0 +1,4 @@
+from .base import BaseCollection
+from .standard import Collection
+from .edge import EdgeCollection  # noqa: F401
+from .vertex import VertexCollection