Merge pull request #237 from Workiva/release_over_react_2.0.0-alpha.dart1

CPLAT-4146 CPLAT-4145 Release over_react 2.0.0-alpha.dart1

Author: rmconsole7-wk

pubspec.yaml

@@ -1,5 +1,5 @@
 name: over_react
-version: 1.31.0
+version: 2.0.0-alpha.dart1
 description: A library for building statically-typed React UI components using Dart.
 homepage: https://github.com/Workiva/over_react/
 authors:
@@ -31,7 +31,7 @@ dev_dependencies:
   dart_dev: ^1.9.6
   dependency_validator: ^1.2.2
   mockito: ^2.2.2
-  over_react_test: ^1.5.0
+  over_react_test: '>=1.6.0 <3.0.0'
   source_gen: ^0.7.4+3
   test: ^0.12.34