Moler

Added
* AdbRemote device - new state ADB_SHELL_ROOT
* allow firing android-linux commands that need root
* access to .start_time of any ConnectionObserver
* help in extending its timeout (calculating its "already passed life-time")

Improved
* hardening Iperf2 against multiple echo at command startup (observed under cygwin)
* better display of regexp patterns in logs - simplify troubleshooting
* str(CommandChangingPrompt) display expected prompt regexp - simplify troubleshooting
* cmd.unix.exit.Exit got new parameter allowed_newline_after_prompt
* allowed_newline_after_prompt=True helps to operate with cygwin

Added
* AdbRemote device being state machine capable to reach ADB_SHELL state
* allow firing android-linux commands from within android device
* ADB commands:
* adb_shell
* AT commands:
* plink_serial

Improved
* AtRemote device uses 'plink -serial' to proxy serial into stdin/stdout
* State Machines definition: commands allowed for state may be specified using module name
* previously (only packages): ['moler.cmd.at'], now: ['moler.cmd.at', 'moler.cmd.unix.ctrl_c']
* helps in code reuse while keeping commands under related device folder
* Improved connection decoder inside ThreadedTerminal: cleaning output from VT100 terminal codes (not all)

Fixed
* GenericAtCommand treats 'NO CARRIER' console output as error indication

Added
* Publisher class - Moler implementation of Publisher-Subscriber Design Pattern
* Iperf2 command publishing intermediate reports to all subscribed "observers"
* AT commands:
* at(AT)
* attach(AT+CGATT=1), detach(AT+CGATT=0), get_attach_state(AT+CGATT?)
* get_imei(AT+CGSN)
* get_imsi(AT+CIMI)
* get_manufacturer_id(AT+CGMI)
* get_revision_id(AT+CGMR)
* moler_serial_proxy tool proxing between serial connection and stdio/stdout
* AtRemote device being state machine capable to reach AT_REMOTE state and issue AT commands
* (controlling AT console available over serial connection on remote machine)

Improved
* CommandTextualGeneric may set direct path to command executable
* (f.ex. OS may default 'iperf' to '/usr/bin/iperf' but user wants '/usr/local/bin/iperf')

Fixed
* ConnectionObserver, AbstractDevice were unable to be used inside multiple inheritance

Fixed
* SSH regex for fingerptint prompt

Added
* Termianl binary debug

Improved
* CI pipeline
* ls command

Changed
* Redefined timeout for telnet and ssh
* RegexHelper checks if parameter is not None

Changed
* connection name returned by iperf2 uses "porthost" format to not confuse on IPv6 (fd00::1:0:5901 -> 5901fd00::1:0)

Deprecated
* `config_type` parameter of `load_config()` is not needed, configuration type is autodetected