perf: fix `perfhelper-pathcopies` report of #changesets The previous computation `<base>::<target>` was wrong, what we actually need is `::<target> - ::<base>`. This is now fixed

py3: use integer division in curseschunkselector.printstring() This fixes a crash when scrolling in curses UI when refresh() is called when a float value (namely 'self.firstlineofpadtoprint', taking its value indirectly from 'self.linesprintedtopadsofar').