v0.12.0 release planning

[kandersolar]

The v0.11.3 milestone is cleared out and the release is ready to finalize. Along the way, we've merged some PRs including what we're calling breaking changes:

pvlib-python/docs/sphinx/source/whatsnew/v0.11.3.rst

Lines 7 to 14 in 40a213b

	Breaking Changes
	~~~~~~~~~~~~~~~~
	* The pvlib.location.Location.pytz attribute is now read only. The
	pytz attribute is now set internally to be consistent with the
	pvlib.location.Location.tz attribute. (:issue:`2340`, :pull:`2341`)
	* Users must now provide ModelChain.spectral_model, or the 'no_loss' spectral
	model is assumed. pvlib.modelchain.ModelChain no longer attempts to infer
	the spectral model from PVSystem attributes. (:issue:`2017`, :pull:`2253`)

Our versioning strategy says that including such changes mean we should call this release 0.12.0 instead of 0.11.3. However, we have several deprecations marked to be removed in 0.12: #2396

@pvlib/pvlib-maintainer @pvlib/pvlib-triage your input is requested: should we call this release 0.12.0 and get some final PRs in to address those deprecations?

[AdamRJensen]

Not really addressing what you're asking but worth mentioning. I plan to implement several breaking changes in the iotools module to bring more consistency. This I hope to have released before the PVSC pvlib tutorial in early June

[wholmgren]

should we call this release 0.12.0 and get some final PRs in to address those deprecations?

Yes. And if Adam immediately introduces more breaking changes then we move on to 0.13 (no need to dwell on 0.12.x series).

[cwhanse]

No objections from me to make the next release v0.12. I marked #2343 for v0.13 thinking we should deprecate pytz in v0.12. We can simply shift that forward by 0.01.

[kandersolar]

Ok, I moved the 0.11.3 items to 0.12.0, renamed 0.11.4 to 0.12.1, and deleted the 0.11.3 milestone.

Looks like @echedey-ls, @RDaxini, and @AdamRJensen already have PRs started for some of these items. Let's try to get those and the rest of the 0.12.0 removals done so that 0.12.0 can be released sometime next week.

• [MAINT]: Remove deprecated pvlib.atmosphere.first_solar_spectral_correction #2131
• Remove deprecated pvsystem.sapm_spectral_loss #2244
• Remove expired read_tmy3 deprecations #2408
• Remove deprecated spectrum.get_am15g function #2409

[cwhanse]

Do we want to deprecate pytz in 0.12?

Let's not, to keep 0.12 on track for release.

[RDaxini]

• Remove deprecated pvsystem.sapm_spectral_loss #2244

#2244 is now ready

What do we think about #2368? It was just a suggestion. It's not a big change but, if it would be helpful to use subfolders, I can open a PR in time for this next release.

[kandersolar]

What do we think about #2368?

+1 from me, but it's not a breaking code change and can easily wait for the next release if time is a constraint

[adriesse]

Thanks @kandersolar ! Just in time for the monthly NumFocus update too!