0.1.0a1

• Removed auth_policy parameter from setup(), this is no longer needed.
• Added a default identity_callback for simple applications, so it is no longer a required schema item.
• Added Permissions.all enum value (which should replace tuple(Permissions)).
• Added validators to inputs (e.g. required, minValue etc. See examples/validators.py).
• Added extensive permission controls (see examples/permissions.py).
• Added admin["permission_re"] regex object to test if permission strings are valid.
• Added buttons for the user to change visible columns in the list view.
• Added initial support for ORM (1-to-many) relationships.
• Added option to add simple bulk update buttons.
• Added option to customise resource icons in sidebar.
• Added option to customise admin title and resource labels.
• Added support for non-id primary keys.
• Added default favicon.
• Included JS map file.
• Fixed autocomplete behaviour in reference inputs (e.g. for foreign keys).
• Fixed handling of date/datetime inputs.