1.9.3:
Requires strict hostname checking patch to be secure. Currently only applied to -p551, if you need other 1.9.3 versions please submit a PR or open an issue and I'll add it.
2.0.0-pX:
Some -p levels require a readline patch
2.1.0 and 2.1.1 require:
https://gist.github.com/mislav/a18b9d7f0dc5b9efc162
2.1.2 builds cleanly
2.2.x build cleanly