Broadcast TLS information in demo banners with API

Support Windows for telnetlib3-client (#137)

Support the windows platform in telnetlib3-client by using 'blessed' (and its dependency, jinxed). 

Closes #21

prepare 3.0.1 release

3.0.0: Hawk TUI release (#125)

3.0.0                                                                                                                                    
  * change: :attr:`~telnetlib3.client_base.BaseClient.connect_minwait` default                                                           
    now 0 (was 1.0 seconds in library API).                                                                                              
  * change: ``force_binary`` auto-enabled when CHARSET is negotiated                                                                     
    (:rfc:`2066`) or ``LANG``/``CHARSET`` received via NEW_ENVIRON                                                                       
    (:rfc:`1572`).  SyncTERM font detection also enables it unconditionally.                                                             
  * change: ``--connect-timeout`` default changed from no limit to 10 seconds.                                                           
  * change: ``--reverse-video`` CLI option from 2.4.0 was removed.                                                                       
  * change: CGA, EGA, and Amiga palettes removed from ``--colormatch``;                                                                  
    only ``vga`` is available at this time.  ``ice_colors`` are now True by default.                                                     
  * bugfix: ``read_some()`` in synchronous API (``TelnetConnection`` and                                                                 
    ``ServerConnection``) blocked until EOF instead of returning available                                                               
    data.  Now returns as soon as any data is available.                                                                                 
  * new: ``TelnetSessionContext`` base class                                                                                             
    and ``writer.ctx`` attribute for                                                                                                     
    per-connection session state.  Subclass to add application-specific                                                                  
    attributes (e.g. MUD client state).                                                                                                  
  * new: ``--ice-colors`` (default on) treats SGR 5 (blink) as bright                                                                    
    background for proper 16-color BBS/ANSI art display.                                                                                 
  * new: ``--typescript FILE`` records session output to a file, similar to                                                              
    the Unix ``script(1)`` command.                                                                                                      
  * new: shared ``TelnetProtocolBase`` mixin extracted from duplicated                                                                   
    server and client protocol code.                                                                                                     
  * new: ``_atomic_json_write()`` and ``_BytesSafeEncoder`` helpers in                                                                   
    ``_paths`` module for fingerprinting subsystem.                                                                                      
  * enhancement: Microsoft Telnet (``telnet.exe``) compatibility refined — server                                                        
    now sends ``DO NEW_ENVIRON`` but excludes ``USER`` variable instead of                                                               
    skipping the option entirely, :ghissue:`24`.                                                                                         
  * enhancement: comprehensive pylint and mypy cleanup across the codebase.

stamp for 2.6.1

TLS support (#124)

- ssl support, even with the dangerous --ssl-no-verify
- servers may also have plaintext or ssl support on the same port, with --tls-auto
- small document refactor about preferring --shell
  in most of our examples, rather than manually writing
  so many ``if __name__ == '__main__':`` code blocks.

stamp for 2.5.0

stamp for 2.4 release

released

version 2.2.0