Version 0.5.2

Changes:

*   Resolve issue #77: Allow using DRR without templates setup
*   Fix issue #79: do not create user when sending verification fails
*   Fix issue #83: Support change to already existing e-mail in the DB
    Detect whether user email field is unique. If yes, then send "e-mail
    already exists" notification instead of verification one.
    Also, perform a check just before changing the e-mail to avoid
    integrity errors.
*   Fix issue #68
    Add VERIFICATION_TEMPLATE_CONTEXT_BUILDER settings key
*   Fix invalid config in README

rest_registration/__init__.py

@@ -1,2 +1,2 @@
-__version__ = "0.5.1"
+__version__ = "0.5.2"
 default_app_config = 'rest_registration.apps.RestRegistrationConfig'