set version to 1.0.0

Author: schilken

pubspec.yaml

@@ -1,7 +1,7 @@
 name: git_commit_streak
 description: A tool that shows the number of consecutive days with at least one commit per day.
 publish_to: "none"
-version: 0.2.0
+version: 1.0.0
 
 environment:
   sdk: ">=2.19.0 <3.0.0"