Update packaging/arch/PKGBUILD

Uploaded new version to AUR and bumped version.
add env vars for plugins action,callback,connection,lookup,vars,filter
Merge pull request #1901 from leucos/patch-1

Update packaging/arch/PKGBUILD
Merge pull request #1923 from fdavis/ans_env_addition

add env vars for plugins action,callback,connection,lookup,vars,filter
Add env vars to changelog