Bump pub version

pkg/dev_compiler/pubspec.yaml

 name: dev_compiler
 version: 0.2.0
 description: >
   Experimental Dart to JavaScript compiler designed to create idiomatic,
   readable JavaScript output.
 
 author: Dart Dev Compiler team <dev-compiler@dartlang.org>
 homepage: https://github.com/dart-lang/dev_compiler
 
 dependencies:
-  analyzer: ^0.28.0-alpha.1
+  analyzer: ^0.29.0-alpha.0

[Jennifer Messerly, 2016/09/12 17:12:14]

Should we just make this a file dependency? instead of a dependency_override.
That was my bad :)

[Bob Nystrom, 2016/09/12 18:15:23]

If you do that, you won't be able to also publish dev_compiler. Packages on
pub.dartlang.org can't have regular dependencies onto local files. An override
is probably the right way to handle it.

(Though there are the usual concerns then of making sure you actually test it
without the override so that you know the published version of DDC works with
that version of analyzer.)

[Jennifer Messerly, 2016/09/12 18:19:00]

yeah ... I think maybe we want to stop publishing the package. At least I can't
think of a good reason to publish it as we're built as a binary in the SDK
(`dartdevc`), but maybe we'll have a reason to do so later.

   args: ^0.13.0
   bazel_worker: ^0.1.0
   browser: ^0.10.0
   cli_util: ^0.0.1
   func: ^0.1.0
   html: ^0.12.0
   js: ^0.6.0
   path: ^1.3.0
   pub_semver: ^1.1.0
   source_maps: ^0.10.0
@@ skipping 14 matching lines @@
     path: ../analyzer
 
 environment:
   sdk: ">=1.12.0 <2.0.0"
 
 executables:
   # Similar to "analyzer.dart" and its command line "dartanalyzer" we use
   # "dartdevc".
   dartdevc: dartdevc
   dev_compiler: dartdevc