cmd SCNvimReboot (reboot interpreter)

[elgiano]

Add a SCNvimReboot command, equivalent to scide's "Reboot Interpreter", i.e. scnvim.stop() -> scnvim.start().
I added a callback to stop(), so that start() can be called after stop is done waiting for sclang to stop.

No default keymap, but I added an entry in docs as well.

I use reboot sometimes in case of fire (situations like "Library did not compile successfully.", where you can't just recompile).

Let me know if it sounds like a reasonable addition to scnvim!

[davidgranstrom]

@elgiano Sorry this PR slipped my mind, but it looks good and a very nice addition to the plugin. Cheers!

[daveriedstra]

Hi - I think this has introduced a regression. Calling :SCNvimStop now produces an error, I think somehow a non-function is being registered as the callback.

Error executing callback:                                                                                                                                                                                                                                     
vim.schedule: expected function                                                                                                                                                                                                                                         
stack traceback:                                                                                                                                                                                                                                                        
        [C]: in function 'schedule'                                                                                                                                                                                                                                     
        .../dried/.config/nvim/plugged/scnvim/lua/scnvim/sclang.lua:247: in function <.../dried/.config/nvim/plugged/scnvim/lua/scnvim/sclang.lua:233> 

[davidgranstrom]

Thanks for the report. I had forgotten that when calling a function (e.g. sclang.stop) from a user command, the command attributes are passed as the first argument. Will push a fix shortly.