Support Rails 6.1#665

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codeodor wants to merge 3 commits intoinfluitive:developmentfrom

aeseducation:development

Commits on Dec 11, 2020

Allow use with Rails 6.1
codeodor
committed

Commits on Mar 10, 2021

Remove Rails 6.1 Deprecation notice by switching to new method for connection_config
codeodor
committed

Commits on Dec 20, 2021

Allow use with Rails version 7+ lower than Rails 8
codeodor
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