pkgsr change:
* Add "USE_LANGUAGES= # none".
* Drop ruby22 support and accept ruby24 and ruby25 since ruby26 bundles
the same version of net-telnet gem.
0.2.0 (2018/07/25)
* replacing all usage of IO.select with the io/wait methods
* Drop support for Ruby 2.2
* Eliminate `mismatched indentations` warning
Provides telnet client functionality.
This class also has, through delegation, all the methods of a socket object
(by default, a TCPSocket, but can be set by the Proxy option to new()).
This provides methods such as close() to end the session and sysread() to read
data directly from the host, instead of via the waitfor() mechanism.
Note that if you do use sysread() directly when in telnet mode, you should
probably pass the output through preprocess() to extract telnet command
sequences.
