Select all keyframes of a character

[tomsoel 16]

Hello,
First of all thanks for 1.2.0 pre-release! 
It could be useful to be able to select in one click all the keyframes of a character for a specific frame instead of select them one by one.
Clicking on the character keyframe (with alt key for example) will select the keyframes of childs (body, head, legs, arms, ..)
This would help to copy and paste a pose.
Thx !