use stdpath('data') instead of stdpath('config')

[goolord]

i feel like session files don't belong in the neovim config dir by default

[bruhtus]

I think using stdpath('data') is more appropriate rather than using stdpath('cache'), like shada file.

[goolord]

i think that's just bikeshedding. as long as it's in an even mildly appropriate directory, i am not personally invested in which base directory it's in

[snezhniylis]

@bruhtus is right. XDG_CACHE_HOME is supposed to store non-persistent files that can be painlessly removed any time. Cleaning file manager thumbnails and compilation caches should not remove Neovim sessions. Using stdpath('cache') is as appropriate as using stdpath('config').

stdpath('data') should be used instead.

[goolord]

the xdg base directory spec does not make any mention of the lifetime of files in XDG_CACHE_HOME, in fact it is intentionally vague, but i'm mildly inclined to agree. it is still bikeshedding

[olimorris]

As a heads up, I've forked this repo and included your pull request in https://github.com/olimorris/persisted.nvim