Revert "Don't multi-retrig standard single retrig"

This reverts commit ce5c5dd023e01650acafe262d62a585387ce3027.
Properly fix retrig effect

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Update changelog

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>