0.11.0a4

Breaking Changes

• Attempting to overwrite an Attribute now raises a RuntimeError, even if the type and access mode match. To statically type hint an Attribute to be validated during initialisation, only specify the type hint on the class - do not create a default instance, e.g. attr: AttrRW[int], not attr = AttrRW(Int()).
• Controller.attributes is now a read-only view. Use Controller.add_attribute("<attr_name>", <attr>) or direct assignment (controller.<attr_name> = <attr>) to create Attributes, which will perform validation and attach them to the controller to use in the interactive shell.

What's Changed

• validate hinted attributes on subcontrollers by @jsouter in #209
• Add timeouts to tests by @hyperrealist in #266
• Fix warnings in tests by @hyperrealist in #267
• Hinted attribute validation by @GDYendell in #268
• Add logging to tutorial by @GDYendell in #269
• Increase docs snippet test timeout by @GDYendell in #270
• Fix alarm status on Command PVs by @GDYendell in #265

Full Changelog: 0.11.0a3...0.11.0a4