Expand analyzer constraints to include 0.33.x versions

[jcollins-g]

Dartdoc and other clients of the analyzer that require specific support for the new mixin declarations need to be able to use the 0.33 version, and currently can't if they use build, because of the constraints for analyzer on build.

• build
• build_resolvers
• build_modules
• build_web_compilers

Blocking

• support the new super mixins dartdoc#1752
• Implement new-style mixin support for Dart 2.1 dartdoc#1765.
• flutter_test depends on analyzer 0.33.0-alpha.0; json_serializable depends on analyzer ^0.32.2; things are bad google/json_serializable.dart#339

[jakemac53]

It looks like analyzer is still on 0.33.0-alpha.0, can we wait until a real version is published or does this have to happen beforehand?

[bwilkerson]

If we push a non-alpha version then we would probably need to update a large number of packages. We can do that if you feel strongly enough about not using alpha versions, but I always try to avoid it for as long as possible because of the work it makes for everyone else.

[jakemac53]

There is no difference though if we are being asked to upgrade to the alpha release? Why would only package:build be required to update?

[jakemac53]

(in general if this is for the new mixin declaration support I would expect all users are going to want that anyways, so its worth a major release)

[kevmoo]

0.33.0 was published on Thursday. We're already seeing issues w/ Flutter on json_serializable.

[jcollins-g]

Dartdoc is no longer hard blocked on this.

[jakemac53]

This is done