Support latest analyzer and dart_style, prepare v2 release (#736)

Prepare to publish (#694)

Drop version suffix.

Support latest pkg:analyzer, prepare to release v1.4.0 (#675)

Prepare for adding InvalidType, make 'TypeChecker.isAssignableFromTyp…

…e()' null safe. (#666)

always use a Uri in `part of` directives (#665)

Closes google/json_serializable.dart#1313

Use prefixed tags for publish config (#664)

The auto-publish comment already indicates that the package name prefix
should be used.