--snip---
NOTE: I make no guarantees that this wallet is "safe"... it hasn't been updated in over 2 years!

Aside whether it's "safe" or not, it;s likely OP will encounter some problem since there are few open issues on github page.
--snip--
All support BTG. Do some background checks before using any.
And use some kinds sandboxing or isolation such as firejail if you still have some concern.