note that ntunnel uses 3.7, there are some asyncio features that

ntunnel uses that weren't introduced till 3.7...

note that it should be usable w/ TCP streams as well, though that
feature is yet to be implemented...

README.md

@@ -3,7 +3,9 @@ ntunnel
 
 The ntunnel program is designed to tunnel Unix domain sockets over TCP,
 using the [Noise Protocol](https://noiseprotocol.org/).  The goal is to
-be secure and simple to use and setup.
+be secure and simple to use and setup.  Due to the flexibility, it can
+forward any standard stream socket to another stream socket, including
+TCP sockets.
 
 Example
 -------
@@ -36,14 +38,14 @@ the same text come out the other side.
 Running Tests
 -------------
 
-Currently this requires Python 3.x for some of the libraries.  If the
-default virtualenv is not 3.x, you can set the VIRTUALENV variable to
-specify which one to use, such as:
-`make env VIRTUALENV=virtualenv-3.6`
+Currently ntunnel requires Python 3.7 or later.  If the default
+virtualenv is not 3.7 or later, you can set the VIRTUALENV variable to specify
+which one to use, such as:
+`make env VIRTUALENV=virtualenv-3.7`
 
 If you want to use an alternate version of python, you can specify
 VIRTUALENVARGS, such as:
-`make env VIRTUALENV=virtualenv-3.6 VIRTUALENVARGS="-p $(which pypy3)"`
+`make env VIRTUALENV=virtualenv-3.7 VIRTUALENVARGS="-p $(which pypy3)"`
 
 Note that I have not tested this w/ pypy3, as when compiling the
 cryptography libraries, it would pick the wrong ones, despite setting