Address Persist based on the work by @huoxito here #a72608308e912b504289b4c9e30740b82dcee8f1
add changelog entries

Fixes #4028
Add inverse_of to product variant associations

Fixes #4031
added autocomplete off HTML5 tag to mail method settings for username and password

Fixes #4036
stock_movements helper fix for stock_transfer

Fixes #4037