Fix Delete escape sequence transmitted: ESC [ 3 ~ 

See www.xfree86.org/current/ctlseqs.html#VT220-Style%20Function%20Keys
Handle Ctrl + Space: transmit NUL

See: www.vt100.net/docs/vt100-ug/table3-5.html
Merge pull request #27 from Plonk42/transmited_bytes_fix

Transmited bytes fix