HaskellNET-SSL broken with all libraries that switched to crypton-connection

[yitz-zoomin]

The connection library - and in fact the entire ecosystem based on cryptonite - is no longer supported and is now considered dangerous to use.

As an immediate fix, @kazu-yamamoto provided the fork crypton-connection that is a drop-in replacement. Essentially all libraries on Hackage that depended on connection have migrated to crypton-connection. Any project that uses any of those libraries together with HaskellNet-SSL cannot be built.

It is urgent to make the change from connection to crypton-connection in this library as well.

[yitz-zoomin]

Fixed by PR #33