list of available helpers

[hornhaut]

Is your feature request related to a problem? Please describe.
Not really a feature of the plugin, but of its documentation: I would like to understand what helpers are implemented. There is a merge from last year (see #165 which hints for more helpers... but I don't manage to find out which. I tried {{replace given "." ""}}. I guess this one is not available :D

Describe the solution you'd like
I think users would benefit from a list of helpers in the readme file

Describe alternatives you've considered
Allowing users to quickly write own helpers in an additional file or the settings page of the plugin

Additional context
If someone explains to me how to find all these helpers in the code (I could not find them, but I don't have a clue about handlebar helpers :D) I am happy to make this list.