V lexer is in addons. Plugins / AddonManager / Install -> choose "lexer: V".
CodeTree panel supports items: fn, enum, interface, struct.

Hopefully Jetbrains is not far behind (GoLand)
Lexer updated.
@Alexey-T Nice, however I can't install python3 on my mac because it conflict with the system, I'm using virtualenv from conda to use isolated python3, so CudaText cant detect python3
No Python engine (3.x) found. Python plugins don't work now. To make it ok:
install Python 3.x from www.python.org, it should be found by CudaText then.
it there any way to configure CudaText to use conda (or Anaconda)?
@bitsnaps I think you can- open config user.json, and write there option "pylib__mac". Its example in default.json-
"pylib__mac": "/Library/Frameworks/Python.framework/Versions/3.5/lib/libpython3.5.dylib",
@Alexey-T Thanks! in my case it was: {"pylib__mac":"/miniconda2/envs/py3/lib/libpython3.7m.dylib",}
@bitsnaps Will add this info to the Cudatext Wiki, thanks.
Thanks!