Issue #130: Fixed support for indenting by tab Allow indent a block of code by selecting a range of lines and pressing 'tab'. The behavior implemented is the same as the one in Sublime Text editor since I found it intuitive enough.

#define xbm_width 12
#define xbm_height 12
static char xbm_bits[] = {
0x00, 0x00, 
0x00, 0x00, 
0x0C, 0x00, 
0x3C, 0x00, 
0xFC, 0x00, 
0xFC, 0x03, 
0xFC, 0x03, 
0xFC, 0x00, 
0x3C, 0x00, 
0x0C, 0x00, 
0x00, 0x00, 
0x00, 0x00, 
};