The image of the boomer is not live updated

[rexim]

Probably related to #21

[rexim]

• XSHMGetImage() from MITSHM
• DGA https://en.wikipedia.org/wiki/Direct_Graphics_Access

[rexim]

We tried xXf86dga https://linux.die.net/man/3/xdga but it appears it doesn't really do what we want and almost deprecated anyway https://bugs.freedesktop.org/show_bug.cgi?id=6153

So, let's stick with only MIT-SHM for now, because it just works.

[predefine]

when fix xd

[nhammond129]

@predefine
if you're just running into the boomer/src/screenshot.nim(45, 26) Error: undeclared identifier: 'TXShmSegmentInfo' error then renaming to PXShmSegmentInfo as suggested

candidates (edit distance, scope distance); see '--spellSuggest': 
 (1, 5): 'PXShmSegmentInfo'

worked for me

additionally, if any X or i3 wizards are about, is there a way I can have boomer full screen and live, but screenshot "beneath" it? I could move it out of the way for each frame but I anticipate that'd result in really fucky behavior