Viresclient

See https://viresclient.readthedocs.io/en/latest/release_notes.html

See https://viresclient.readthedocs.io/en/latest/release_notes.html

What's Changed
* Test on different sets of python versions on each os by smithara in https://github.com/ESA-VirES/VirES-Python-Client/pull/117
* Update CHAOS-8 reference by smithara in https://github.com/ESA-VirES/VirES-Python-Client/pull/118
* Add IGRF-14 reference. Remove deprecated IGRF-12 and CHAOS-6 by smithara in https://github.com/ESA-VirES/VirES-Python-Client/pull/119


**Full Changelog**: https://github.com/ESA-VirES/VirES-Python-Client/compare/v0.12.0...v0.12.1

See https://viresclient.readthedocs.io/en/latest/release_notes.html

Adds TOLEOS products and CHAMP magnetic data, supporting [VirES server v3.14.0](https://vires.services/changelog)

See https://viresclient.readthedocs.io/en/latest/release_notes.html

Add SW_FAST_FACxTMS_2F

Fix for supporting fetching a list of VOBS observatories