new layer: lang#hy

[Wang Shidong‏]

we just add lang#hy layer, this layer is for hy development. hy is a dialect of lisp that's embedded in python.

https://spacevim.org/layers/lang/hy/ 

features:

1. syntax

2. code runner

3. repl

if anyone know how to complete hy code, please let me know, thanks!

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wsd...@outlook.com