Relese 0.4.0
Changes
- Implemented SCP send and recv methods, all versions.
- Conditional compilation of features requiring newer versions of libssh2.
- Implemented channel receive window adjust, x11_*, poll and handle extended data methods.
- Implemented session get/set blocking, get/set timeout.
- Updated agent connection error exception name.
- Renamed session method name to match libssh2.
- Info extension classes for SCP file stat structure.