MILDLY BACKWARDS-INCOMPATIBLE CHANGE:  The optional escape sequence handling mechanism has been modified so that it now passes the terminal number that produced the event along with the `termio.Multiplex` instance that controls it as keyword arguments.  This was necessary (and important) so that it would be possible to identify the terminal that triggered any given 'terminal:opt_esc_handler' event.  Existing handlers can work with the new arguments by being changed from, `my_handler(text)` to `my_handler(text, **kwargs)` or `my_handler(text, term=None, multiplex=None)`.
SSH plugin:  Fixed the bug reported in issue #314 (https://github.com/liftoff/GateOne/issues/314) where telnet wasn't working.
SSH plugin:  Modified `opt_esc_handler()` to work with the new event arguments.
SSH plugin:  It's now using it's own log, 'gateone-terminal-ssh.log'.  Also, log output will now include a lot more information and metadata.
Notice plugin:  Modified to use the new `opt_esc_handler()` arguments.
Notice plugin:  Renamed the 'gateone-terminal-notice.log' to 'gateone-terminal-notice.log'
Example plugin:  Modified to use the new `opt_esc_handler()` arguments.
gateone.js:  You can now pass `resizable: false` in the options given to `GateOne.Visual.dialog()` (does exactly what you'd think).
gateone.js:  You can now pass `where: '#some_element'` in the options given to `GateOne.Visual.dialog()` to place the new dialog in the given location.  When a 'where' is given, the CSS 'position' attribute will be changed on the dialog from 'fixed' to 'absolute' so that the dialog will be contained within the given element.
gateone.js:  You can now toggle maximize on dialogs and there's a non-functional minimize icon (working on it).  Maybe I should rename them to "windows", haha.
gateone.js:  Removed some unnecessary metadata tags from SVGs.
terminal.js:  Got rid of that "one moment while your terminals are reattached..." message since it was getting annoying.
Themes:  Lots of changes to dialog-related stuff.
Themes:  Made some serious improvements with the solarized theme and some minor improvements in the dark-black and white themes.