widget,emulation: Ignore if Shift is released while selecting with mouse
widget,emulation: Ignore if Shift is released while selecting with mouse

https://bugzilla.gnome.org/show_bug.cgi?id=745134

flaxandteal/gasket-vte,saitoha/vte-sixel,saitoha/vte-sixel,flaxandteal/gasket-vte,thestinger/vte-ng,rvu95/vte,rvu95/vte,rvu95/vte,flaxandteal/gasket-vte,saitoha/vte-sixel,thestinger/vte-ng,rvu95/vte,thestinger/vte-ng,flaxandteal/gasket-vte