Merge remote-tracking branch 'origin/main' into pr50-resolve

# Conflicts:
#	docs/echo-types/conservativity.adoc
#	docs/echo-types/earn-back-plan.adoc
#	docs/echo-types/paper.adoc
#	docs/echo-types/types-abstract.adoc
#	docs/retractions.adoc

Author: hyperpolymath