Update setup.py

Bump version.

Author: Cosik

setup.py

@@ -6,7 +6,7 @@
 plugin_identifier = "navbartemp"
 plugin_package = "octoprint_%s" % plugin_identifier
 plugin_name = "OctoPrint-NavbarTemp"
-plugin_version = "0.12"
+plugin_version = "0.13"
 plugin_description = "Displays temperatures on navbar"
 plugin_author = "Jarek Szczepanski & Cosik"
 plugin_author_email = "imrahil@imrahil.com"
@@ -64,4 +64,4 @@ def params():
 
 	return locals()
 
-setuptools.setup(**params())
+setuptools.setup(**params())