1.5.0rc2

Hello Superset Community,

This is a call for the vote to release Apache Superset version 1.5.0. New cherries since 1.5.0rc1:

• #19612 fix(select): render when empty multiselect (@villebro)
• #19565 fix(sqla): apply jinja to metrics (@villebro)
• #19582 fix(dataset): avoid crash if database missing (@villebro)
• #19542 fix: big number with trendline can't calculate cumsum (@zhaoyongjie)
• #19548 fix(sqllab): null database with backend persistence (@villebro)
• #19530 docs: release notes for 1.5 (@villebro)
• #19557 chore: remove redundant adodbapi warning (@villebro)

The release notes (these weren’t available during rc1):
https://github.com/apache/superset/tree/master/RELEASING/release-notes-1-5

The release candidate:
https://dist.apache.org/repos/dist/dev/superset/1.5.0rc2/

Git tag for the release:
https://github.com/apache/superset/tree/1.5.0rc2

The Change Log for the release:
https://github.com/apache/superset/blob/1.5.0rc2/CHANGELOG.md

The Updating instructions for the release (unchanged since rc1):
https://github.com/apache/superset/blob/1.5.0rc2/UPDATING.md

public keys are available at:

https://www.apache.org/dist/superset/KEYS