Release v0.0.8

bb5f7a1 (HEAD -> master, tag: v0.0.8, origin/master, origin/HEAD) update docs to use v0.0.8
ff059bd docker: Support for arm64 and amd64
f5dde6b testapp verification
c7b80e4 refactor multi-authenticator
96b3261 Update go mods
cf5f25d Google Proto API linter added to container
c696bd0 Add support for MultiClientID Authenticators. (#22)
143bfdb allow specific grpc error code to be returned from GetAuthRequest
a10235d provide a way to plug-in an external authorizer
f55bb4c update web