src/vte.c: Display UTF-8 preedit strings properly, fix copy (no, really this time), and reset IM contexts when pasting text in.
src/vte.c: Display UTF-8 preedit strings properly, fix copy (no, really this time), and reset IM contexts when pasting text in.

jessevdk/vte,asivokon/vte-fx,gloob/vte-copy,jessevdk/vte,flaxandteal/gasket-vte,saitoha/vte-sixel,aligo/vte,aligo/vte,asivokon/vte-fx,jessevdk/vte,flaxandteal/gasket-vte,aligo/vte,thestinger/vte-ng,pjm0616/vte,pjm0616/vte,asivokon/vte-fx,gloob/vte-copy,saitoha/vte-sixel,saitoha/vte-sixel,jessevdk/vte,flaxandteal/gasket-vte,rvu95/vte,thestinger/vte-ng,rvu95/vte,flaxandteal/gasket-vte,thestinger/vte-ng,gloob/vte-copy,rvu95/vte,asivokon/vte-fx,pjm0616/vte,rvu95/vte