Bumps version to v2.1.3

Author: neatc0der

mkdocs_markmap/__meta__.py

@@ -1,6 +1,6 @@
 PACKAGE_NAME = 'mkdocs_markmap'
 PROJECT_NAME = PACKAGE_NAME.replace('_', '-')
-PROJECT_VERSION = '2.1.2'
+PROJECT_VERSION = '2.1.3'
 
 OWNER = 'neatc0der'
 REPOSITORY_NAME = f'{OWNER}/{PROJECT_NAME}'