updated pubspec (#4)

* fixed warnings

* decreased min dart version

* Update pubspec.yaml

Co-authored-by: Volodymyr Oliinyk <[email protected]>

Author: Oliinyk-Volodymyr

pubspec.yaml

@@ -1,6 +1,6 @@
 name: logger_flutter_plus
 description: Flutter extension for logger. Please go there for documentation.
-version: 1.0.0
+version: 1.0.1
 
 homepage: https://github.com/Oliinyk-Volodymyr/logger_flutter