exempt __repr__s __slots__ and other @attrs related changes from compatibility policy

[twisted-trac]

	@graingert reported
Trac ID	trac#9982
Type	enhancement
Created	2020-09-28 11:29:48Z

I think it's generally assumed that __repr__s and monkey patching are not public interfaces to be depended upon, but now with @attrs.frozen on the horizon it's likely that objects new and old will be better with the new attrs defaults.

This PR nails down those compatibility assumptions, for the purposes of @functools.wraps, @property and @attrs.frozen

#1406

Searchable metadata

trac-id__9982 9982
type__enhancement enhancement
reporter__graingert graingert
priority__normal normal
milestone__None None
branch__ 
branch_author__ 
status__closed closed
resolution__fixed fixed
component__core core
keywords__None None
time__1601292588020378 1601292588020378
changetime__1603754210426000 1603754210426000
version__None None
owner__None None

[twisted-trac]

	@graingert commented

#1406

[twisted-trac]

	@graingert set status to closed