C++ library extending existing NCurses++ library and providing a tiling window manager and a (more or less) working pseudo terminal window based on libvterm.
* demo app: using `SHELL` environment var or `/bin/bash` as default
* removed some debug messages
* enabled all vterm screen handlers; if not implemented there is a debug
message
* fixed and improved cursor position — was sometimes off; e. g. if
pressing backspace
* stubs for some functions required for implementing #3
Christian Burger
c0a3ca7822