prep 8 release

Author: robrbecker

CHANGELOG.md

@@ -1,4 +1,4 @@
-## 8.0.0-nullsafe.2
+## 8.0.0
   - Allow start page, per_page, number of pages options to pagination helper
   - Allow page options for listTags
 

pubspec.yaml

@@ -1,10 +1,10 @@
 name: github
-version: 8.0.0-nullsafe.2
+version: 8.0.0
 description: A high-level GitHub API Client Library that uses Github's v3 API
 homepage: https://github.com/SpinlockLabs/github.dart
 
 environment:
-  sdk: '>=2.12.0-259.12.beta <3.0.0'
+  sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
   collection: ^1.15.0
@@ -18,7 +18,7 @@ dev_dependencies:
   build_test: any
   build_web_compilers: any
   json_serializable: ^4.0.0
-  mockito: ^5.0.0-nullsafety.5
+  mockito: ^5.0.0
   pedantic: ^1.10.0
   test: ^1.16.0
   yaml: ^3.0.0