Bump version to 3.4.0 for queue priority feature

Author: rknell

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## 3.4.0
+
+- Added ability to add items to the front of the queue (renamed from needsPriority to addToFront for clarity)
+- Fixed obsolete imports in README examples
+
+## 3.3.0+2
+
 ## 3.0.0-nullsafety.0
 
 - Initial null safe release

pubspec.yaml

@@ -1,13 +1,12 @@
 name: queue
 description: Queue up futures from multiple sources and await their return anywhere in your code.
-version: 3.0.0-nullsafety.0
+version: 3.4.0
 homepage: https://github.com/rknell/dart_queue
 repository: https://github.com/rknell/dart_queue
 
 environment:
-  sdk: ">=2.12.0-0 <3.0.0"
+  sdk: ">=2.12.0 <4.0.0"
 
 dev_dependencies:
-  extra_pedantic: 1.3.0
-  pedantic: 1.10.0
   test: ^1.16.3
+  lints: ^2.0.1