Add 550 for extinction output

MAPL 3 renames (#460)

Tag v2.7.0-rc.1 on develop as of 2026-May-26

Merge pull request #441 from GEOS-ESM/hotfix/v2.6-fix-data-driven-SU

v2.6: Fix data-driven SU

Merge pull request #440 from GEOS-ESM/bugfix/v2.5-fix-data-driven-SU

v2.5: Fix data-driven SU

Merge pull request #432 from GEOS-ESM/develop

GitFlow: Merge develop into main for 2.6.4 release

Merge pull request #428 from GEOS-ESM/feature/acollow/qfed3yaml-for-v2.5

v2.5: Update ExtData.yaml files to use science quality QFED3 emissions

Merge pull request #426 from GEOS-ESM/develop

GitFlow: Merge develop into main for v2.6.3 release

Merge pull request #424 from GEOS-ESM/feature/pcolarco/v11-fix_volcan…

…ic_emissions

v2.5: Backport volcanic emissions fix

Merge pull request #397 from GEOS-ESM/feature/two_freq_extinct_2_3_1

Feature/two freq extinct 2 3 1