-----
* [simplify] Removed `inspect` and `to_slug` from `BaseSlugNameMixin.set_slug` method. These parameters seemd like a way
to override some core functionality, which seems like a rare enough case to not maintain it, especially without tests.
* [simplify] Removed `named_tempfile_cls` from `Blob.get_as_named_tempfile` as it wasn't used.
* [simplify] Simplified the `Blob.update_from_url`. Now the method accepts only url parameter and does exactly one thing.
* [code] Use default arguments instead of compose sections.