create a prioritised list of improvements to be backported from potel-base

[dingsdax]

https://github.com/getsentry/sentry-python/tree/potel-base

[linear]

PY-1884

[sentrivana]

There is very little that can actually be ported since virtually all changes that were not breaking were applied to master and potel-base both.

Non-breaking, portable changes only on potel-base:

• Async transport Port async transport to 2.x #4929
• Adding set_attribute (which uses set_data under the surface) Add set_attribute to span #4932
• Async span context manager Port async span context managers to 2.x #4930
• Adding span.activate() and span.deactivate() as more user-friendly alternatives to __enter__() and __exit__() Add activate() and deactivate() span API #4931

[sentrivana]

For the record, these are some deprecations and breaking changes that we can consider if/when there's a 3.0:

Dropping support

• Remove eventlet support Remove eventlet support #4584
• Drop Python 3.6 and remove 3.6 compat Drop Python 3.6 #3434
• Drop experimental logs options in 3.0 ref: Drop experimental logs options in 3.0 #4653
• Drop support for old frameworks Drop support for old frameworks #4246

Breaking refactors

• Remove Hub and related code for good Remove Hub and related code for good. #3446
• Remove Spotlight Django integration breaking: Remove Spotlight Django integration #4747
• Remove HttpTransport hub_cls attribute feat(transport): Remove HttpTransport hub_cls attribute #3412
• Remove sentry_sdk.init context manager
• Drop even more deprecated stuff chore: Drop even more deprecated stuff #4193 chore: Drop more deprecated stuff #4176
• Removed datetime_from_timezone Removed datetime_from_timestamp ... #3569
• Fix FastAPI recursive exceptions Migrate typing for integrations - part 4 #4533
• Better handling of exception groups Better handling of exception groups #4164
• Use warnings module for deprecation messagse. LookupError <ContextVar name='current_scope' default=None at 0x7f88232e1620> #4410
• Remove tags set by the sdk
• Change Lambda timeout warning message Change Lambda timeout warning message #4671

API Changes

• Refactoring continue_trace Implement new continue_trace and make WSGI work #3460
• Drop propagate_traces Drop propagate_traces #4206
• Drop set_measurement ref: Drop set_measurement #4333
• Remove sentry_sdk.push_scope feat(api): Remove sentry_sdk.push_scope #3408, sentry_sdk.configure_scope feat(api): Remove sentry_sdk.configure_scope #3406
• Remove outdated (non-set) request status codes format
• Deprecate/remove Span.set_data() Deprecate Span.set_data() #4261
• Remove scope.span = setter Remove scope.span = setter and make sure scope.span reference is correct in context manager regardless of source of span #4439

Changing defaults

• Enable Django cache_spans by default [breaking] Enable Django cache_spans by default #3994
• Make HTTP2Transport the default breaking(transport): Make HTTP2Transport the default #4492
• Do not capture errors from LoggingIntegration to Sentry by default feat(logging): Do not capture errors from LoggingIntegration to Sentry by default #4300