Revert "chore: update pubspec.lock"

This reverts commit 1eebe45.

Travis fails: https://travis-ci.org/angular/angular.dart/builds/31741920

Author: chirayuk

pubspec.lock

@@ -24,7 +24,7 @@ packages:
   code_transformers:
     description: code_transformers
     source: hosted
-    version: "0.1.6"
+    version: "0.1.5"
   collection:
     description: collection
     source: hosted
@@ -36,35 +36,39 @@ packages:
   guinness:
     description: guinness
     source: hosted
-    version: "0.1.14"
+    version: "0.1.9"
   html5lib:
     description: html5lib
     source: hosted
     version: "0.10.0"
   intl:
     description: intl
     source: hosted
-    version: "0.11.4"
+    version: "0.8.10+4"
   js:
     description: js
     source: hosted
     version: "0.2.2"
   logging:
     description: logging
     source: hosted
-    version: "0.9.2"
+    version: "0.9.1+1"
   matcher:
     description: matcher
     source: hosted
-    version: "0.11.1"
+    version: "0.11.0"
+  meta:
+    description: meta
+    source: hosted
+    version: "0.8.8"
   mock:
     description: mock
     source: hosted
     version: "0.11.0+2"
   path:
     description: path
     source: hosted
-    version: "1.2.2"
+    version: "1.2.1"
   perf_api:
     description: perf_api
     source: hosted
@@ -80,11 +84,7 @@ packages:
   source_maps:
     description: source_maps
     source: hosted
-    version: "0.9.4"
-  source_span:
-    description: source_span
-    source: hosted
-    version: "1.0.0"
+    version: "0.9.3"
   stack_trace:
     description: stack_trace
     source: hosted
@@ -100,7 +100,7 @@ packages:
   utf:
     description: utf
     source: hosted
-    version: "0.9.0+1"
+    version: "0.9.0"
   web_components:
     description: web_components
     source: hosted