Git fetch returns false when failed
Not every subplugins were found by the plugin manager
Adding support for subsystems in PluginManager

Yup, it should not really have been mixed up with plugins,
but I am sort of lazy to write 'component' library so
it will be there for now, and I am sure we will live with it.

Also, why the hell did I make that class with only static
methods? I must have had a reason at the time...
Sub plugin types paths start with a / like plugin types
PluginManager can find out a subsystem or plugin from a path
New JS command
Resolve plugin path before subsystem
Add watchdog to JS shift command
Updating readme file for JS command
Bash completion for JS command
Updated masterBranch to 28
Updating changelog
Bump to version 1.2