Release 2020.2

[jeanconn]

Quaternion
Minor version increase. Interface changes backward compatible.

• Vectorize Quaternion#5 New vectorized interface: allows handling of arrays of quaternions without using for loops.
• Use setuptools_scm for single-source version Quaternion#22 Implementation of setuptools_scm, to provide better handling of package versions.
• Setting up automated builds Quaternion#25 Setting up automated build of conda packages.
• Improving Docs Quaternion#16 Improving documentation.

Kadi 5.0.1:
patch version increase

• Setting up automated builds kadi#157 Setting up automated builds.
• Add .gitattributes and .git_archival.txt for setuptools_scm use kadi#156 Implementation of setuptools_scm.
• Alerts to aca@head and remove OCC task_schedule configs kadi#154 Alerts to aca@head and remove OCC task_schedule configs.

ACIS packages
(patch version increases: acisfp_check 2.7.2, acis_thermal_check 2.9.2, backstop_history 1.1.2, dea_check 2.3.2, dpa_check 2.5.2, psmc_check 1.3.1):

• "lightweight" building. Removing dependencies required at build time.

[jeanconn]

I think these updates could just go this week for ska3-flight. I note Quaternion and kadi still need releases.

[jeanconn]

@javierggt Do you want to make the note to mpweekly and brief this tomorrow or should I?

[javierggt]

I can do it.