Adapt neovim_mod.py to the lastest version of the 'neovim' package
Adapt neovim_mod.py to the lastest version of the 'neovim' package

The 'neovim' package was refactored and some parts of the API changed. This
updates neovim_mod.py to reflect those changes.

martindemello/vroom,google/vroom,malcolmr/vroom,groschovskiy/vroom