docs: clarify version alignment with blink.cmp

feat!: remove impersonate_nvim_cmp option

fix: remove unnecessary lazy.lua

fix: add compatibility with cmp-buffer (#37)

feat: call default execute implementation in blink.cmp 0.14+

fix: handle case where candidates has no items correctly

fix: remove unused require

fix: trigger kind

fix: check for invalid documentation

fix: source config.opts.cmp_name

feat: allow using a different name for sources than the nvim-cmp name

feat: cmp.config.sources()

Add default core.filter to prevent lsp_signature's error. (#27)

fix: do not cache source (#24)

feat: add simple `cmp.get_config` implementation (#22)