* Update documentation to only claim support for 2.4.0x
* Python test code; remove newlines between imports.
* Sync comments between kotlin 1.8 and 1.9
* Update code comments to attach where actually relevant,
and improve comments on IrMemberAccessExpression<*>.extensionReceiverParameterIndex()
Mark the integration tests that require a Kotlin 1.x language version
with @pytest.mark.kotlin1 so CI can run them on a pinned pre-2.4
compiler (Kotlin 2.4 no longer accepts -language-version 1.9).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
We are no longer bound to the platform-specific directories, so simplify the test organization.
If you don't want this change, just skip merging this PR. It's purely optional.
I kept the platform-specific directories around under `kotlin`,
but you could also easily merge all these together if you find them unhelpful.
I'll leave that change to you.
