[keycloak-user] Auth SPI being refactored in 3.0

[Bill Burke]

The Authentication SPI is being refactored in 3.0.  Like what happened 
in Keycloak 2.x and the User Storage SPI, the Authentication SPI will be 
refactored and improved through various 3.x releases.  We'll clean up 
areas, rewrite certain areas, and get the SPI ready so that it can be 
stable and supportable for the foreseeable future.  We are also doing 
this work so that we can support things like step-up authentication and 
FIDO etc. although the latter is for much later down the road.

The first area that will be tackled will be the Form SPI.

Regards,

Bill