RLS: 0.11 release notes (#2462)
RLS: 0.11 release notes (#2462)

* DOC: draft 0.11 release notes

* finish all commit

* code review suggestions

Co-Authored-By: rraymondgh <847a9de69d7e8c125a945c37ca0c1426f6e3e7e7@users.noreply.github.com>

* reword geodataframe downcasting changes

* cln

* review, formatting, cleanup

* Apply suggestions from code review

Co-authored-by: rraymondgh <847a9de69d7e8c125a945c37ca0c1426f6e3e7e7@users.noreply.github.com>
Co-authored-by: Martin Fleischmann <54669547a225ff20cba8b75a4adca540eef25858@martinfleischmann.net>
Co-authored-by: Joris Van den Bossche <36c737f86d71d8ee1ddeb1e5c83102ee5de8f97c@gmail.com>
geopandas/geopandas,geopandas/geopandas,geopandas/geopandas