sym will contain unicode pprint too

Should enable always unicode disp, eventually.
new display code, wip
disp: strtrimp(disp) -> x.flat change, most assumptions
new display code, part 2
octsympy_config: new display command, remove unicode command
display.m: clean up format strings
codegen: some disp(x) I changed before could also be a string, test fixes

New disp() means lots of strtrim(disp(x)) type code is broken, needs
to have disp(x,'flat') instead.
pretty: just a call to disp in most cases.
header: escape &gt; correctly
Merge pull request #84 from cbm755/newdisp

new display code