3.0.0-M4

Focus macro

• add subtype constraint to as (#1112) @kenbot
• field selection on case classes with a single field generates an Iso (#1111) @kenbot

API update

• add cats instances to zip Lenses together (#1109) @vaslabs
• add as extension method to all optics (#1110, #1123) @julien-truffaut
• use monocle.syntax.all._ for all extension methods (including macros) for both Scala 2 and 3 (#1120) @julien-truffaut
• add inheritance between AppliedOptics (#1116) @julien-truffaut
• add type aliases for AppliedOptics (#1113) @julien-truffaut
• Deprecate all codiagonal except Lens.codiagonal (#1115) @julien-truffaut
• Deprecate first, second, left, right, split. Move choice to cats instance (#1114) @julien-truffaut

Documentation

• enable scalajs-mapSourceURI option if Scala 3 (#1107) @xuwei-k
• add source links to scala 3 documentation. (#1108) @romanowski