We've now got official docs you can check them out at https://docs.viaversion.com/display/VIAVERSION/ (If you need to know everything).

Change log:

• For 1.10.1 allow replacing of the piston block which crashes 1.10.1, enable in the config.
• Fix concurrency issues when using ProtocolSupport on 1.8.8 server
• Support for 1.9.2 servers with 1.10.2/1 (Work from myself, @lenis0012 and @Matsv with help from @pokechu22)
• If you're having json issues we've now added a force json option to the config. (Thanks @Matsv)
• Better potion fixes by @jose.rob.jr
• You can now use the config to block specific protocol versions, you can get these from http://wiki.vg/Protocol_version_numbers (Thanks @Matsv)
• Signs are now handled properly by our transformers. (Thanks @Matsv)
• General fixes to some of our packet writing methods.

As always leave issues on our GitHub, have a good night! Donations as always are appreciated.