add shortcut+backspace support
add shortcut+backspace support

cmaughan/imgui,Pagghiu/imgui,Flix01/imgui,mikesart/imgui,Flix01/imgui,thennequin/imgui,Pagghiu/imgui,dougbinks/imgui,bkaradzic/imgui,Psybrus/imgui,ocornut/imgui,nProtect/imgui,elect86/imgui,cmaughan/imgui,ocornut/imgui,tom-seddon/imgui,thennequin/imgui,aimotive/imgui-glfw,ggtucker/imgui,ggtucker/imgui,ocornut/imgui,bkaradzic/imgui,tom-seddon/imgui,Psybrus/imgui,bkaradzic/imgui,seanmiddleditch/imgui,aimotive/imgui-glfw,dougbinks/imgui,Flix01/imgui,wflohry/imgui-addons,cmaughan/imgui,nProtect/imgui,mikesart/imgui,ggtucker/imgui,nProtect/imgui,elect86/imgui,burningreggae/imgui,thevaber/imgui,wasikuss/imgui,wasikuss/imgui,burningreggae/imgui,thevaber/imgui,wflohry/imgui-addons,seanmiddleditch/imgui,cmaughan/imgui