neuron.vim
I started using this neuron thing to create an update this same naddr1qvzqqqr4gupzqwlsccluhy6xxsr6l9a9uhhxf75g85g8a709tprjcn4e42h053vaqyghwumn8ghj7enfv96x5ctx9e3k7mgqpqmnjdee8q6x2vce34stx, but the existing vim plugin had too many problems, so I forked it and ended up changing almost everything.
Since the upstream repository was somewhat abandoned, most users and people who were trying to contribute upstream migrate to my fork too.