Release ska3-flight 2021.14

[javierggt]

Packages to include

• backstop_history
• acis_thermal_check
• skare3_tools,
• proseco,
• eng_archive (after Try preventing square overflow and give debug info otherwise cheta#224),
• kadi,
• Ska.Matplotlib,
• sparkles (after Add module to find ER catalog sparkles#161),
• chandra_aca,
• Quaternion (after Add from_attitude class method for more permissive init Quaternion#39),
• aca_view

Checklist

• Check packages are built and copied to test channel.
• Document all changes (skare3-changes-summary ...).
• Document test status (skare3-test-dashboard ...).
• Promote packages from masters to test channel (skare3-promote ...).
• Add related issues to PR (python -m skare3_tools.github.scripts.milestone_issues ... for now).
• Install on HEAD test environment (ska3/test).
• Write summary + highlight relevant changes.
• Get approval at load review.
• Promote packages to main conda channel (skare3-promote ...).
• Update production systems:
  • Announce to aca@cfa/slack.
  • Update ska3/flight on HEAD as aca user.
  • Update ska3/flight on chimchim as SOT user.
  • Run ska_testr on HEAD.
  • Announce to chandracode and mpweekly.
  • Announce to aca@cfa/slack.