Add encoding parameter to pxsshu
Add encoding parameter to pxsshu

Closes gh-172 (alternative approach to the same problem)
Closes gh-169

crdoconnor/pexpect,nodish/pexpect,quatanium/pexpect,nodish/pexpect,crdoconnor/pexpect,nodish/pexpect,crdoconnor/pexpect,quatanium/pexpect,quatanium/pexpect