Merge remote-tracking branch 'upstream/master' into containment

.gitignore

logo/micropythonpowered-art.png

logo/vector-logo-2.png

logo/vector-logo-inkscape_master.svg

py/compile.c

py/emitpass1.c

py/gc.c

py/lexer.c

py/lexer.h

py/map.c

py/map.h

py/mpconfig.h

py/obj.c

py/obj.h

py/objdict.c

py/objint.c

py/objlist.c

py/objset.c

py/objstr.c

py/objtype.c