Prepares for release 3.0.0

Signed-off-by: Ko Nagase <[email protected]>

Author: sanak

init.rb

@@ -6,7 +6,7 @@
   author_url 'https://github.com/georepublic'
   url 'https://github.com/gtt-project/redmine_gtt'
   description 'Adds location-based task management and maps'
-  version '2.1.0'
+  version '3.0.0'
 
   requires_redmine :version_or_higher => '4.0.0'