Updated dependency version constraints

Author: stevenroose

pubspec.yaml

@@ -14,16 +14,16 @@ homepage: https://angulardart.org
 environment:
   sdk: '>=1.4.0'
 dependencies:
-  analyzer: '>=0.15.0 <0.19.0'
-  args: '>=0.10.0 <0.11.0'
+  analyzer: '>=0.15.0 <0.23.0'
+  args: '>=0.10.0 <0.13.0'
   barback: '>=0.13.0 <0.17.0'
   browser: '>=0.10.0 <0.11.0'
-  code_transformers: '>=0.1.4+2 <0.2.0'
-  collection: '>=0.9.1 <1.0.0'
+  code_transformers: '>=0.1.4+2 <0.3.0'
+  collection: '>=0.9.1 <1.2.0'
   di: '>=3.3.1 <4.0.0'
-  html5lib: '>=0.10.0 <0.11.0'
+  html5lib: '>=0.10.0 <0.13.0'
   intl: '>=0.8.7 <0.12.0'
-  observe: '>=0.10.0+1 <0.11.0'
+  observe: '>=0.10.0+1 <0.13.0'
   perf_api: '>=0.0.9 <0.1.0'
   route_hierarchical: '>=0.6.0 <0.7.0'
 dev_dependencies:
@@ -32,5 +32,5 @@ dev_dependencies:
   mock: '>=0.10.0 <0.12.0'
   protractor: '0.0.5'
   unittest: '>=0.10.1 <0.12.0'
-  web_components: '>=0.3.3 <0.4.0'
+  web_components: '>=0.3.3 <0.10.0'
   browser_detect: '>=1.0.3 <2.0.0'