Update api

[gigamaax]

here's the output from the compare

❯ go run api_tool.go -compare
> nvim_get_hl_ns(opts Dictionary) Integer { name(nvim_get_hl_ns) }
> nvim_tabpage_set_win(tabpage Tabpage, win Window) void { name(nvim_tabpage_set_win) }
> nvim_ui_term_event(event String, value Object) void { name(nvim_ui_term_event) }
> nvim_win_text_height(window Window, opts Dictionary) Dictionary { name(nvim_win_text_height) }
----
< nvim_buf_get_option(buffer Buffer, name String) Object { name(nvim_buf_get_option) }
> nvim_buf_get_option(buffer Buffer, name String) Object { name(nvim_buf_get_option); deprecatedSince(11); }
----
< nvim_buf_set_option(buffer Buffer, name String, value Object) void { name(nvim_buf_set_option) }
> nvim_buf_set_option(buffer Buffer, name String, value Object) void { name(nvim_buf_set_option); deprecatedSince(11); }
----
< nvim_get_option(name String) Object { name(nvim_get_option) }
> nvim_get_option(name String) Object { name(nvim_get_option); deprecatedSince(11); }
----
< nvim_set_option(name String, value Object) void { name(nvim_set_option) }
> nvim_set_option(name String, value Object) void { name(nvim_set_option); deprecatedSince(11); }
----
< nvim_win_get_option(window Window, name String) Object { name(nvim_win_get_option) }
> nvim_win_get_option(window Window, name String) Object { name(nvim_win_get_option); deprecatedSince(11); }
----
< nvim_win_set_option(window Window, name String, value Object) void { name(nvim_win_set_option) }
> nvim_win_set_option(window Window, name String, value Object) void { name(nvim_win_set_option); deprecatedSince(11); }

I mostly just took a stab at this, I'm not sure if there is a better process, but I put down the steps I took in the readme. I was waiting until #184 was merged since it's harder to validate regressions, but the tests are passing locally.