I finally found a little time to finalize an installer for Hunspell for InDesign CC 2017 and InCopy CC 2017 is ready. One of the delays was that I have not gotten the new installers to work on my own computers but they work on all other computer I have tried it on. In fact, you could use the 2015 installer for the 2017 version if you change the year part in the applications folders names of InDesign and InCopy from 2017 to 2015. And change the names back after the installation. And now you can use these new installers.
I am am pretty excited to find out why my computers are excluded.