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 9
#define xbm_height 9
static char xbm_bits[] = {
0x00, 0x00, 
0x80, 0x00, 
0xC0, 0x00, 
0xE2, 0x00, 
0x76, 0x00, 
0x3E, 0x00, 
0x1C, 0x00, 
0x08, 0x00, 
0x00, 0x00, 
};