Vim is Charityware. You can use and copy it as much as you like, but you are encouraged to make a donation for needy children in Uganda. Please see |kcc| below or visit the ICCF web site, available at these URLs:
http://iccf-holland.org/ http://www.vim.org/iccf/ http://www.iccf.nl/
You can also sponsor the development of Vim. Vim sponsors can vote for features. See |sponsor|. The money goes to Uganda anyway.
Yet another reason Neovim is the superior choice, I suppose