Update wcwidth to Unicode 15.0.0

v29

Update wcwidth submodule to v4: Unicode 15.0.0

Update wcwidth submodule license

Updates License for wcwidth

Update wcwidth to jquast/wcwidth 2020-07-14

Thanks @landfillbaby.

v26

Update wcwidth data to use 0.1.9 from https://github.com/jquast/wcwidth. Thanks to @sdottaka!

v24

• Remove <iconv.h>.

v23

• Remove <langinfo.h>.

v22

• Remove libintl.h.

v21

• Fix conflict with Android O (see #1).

v20

• Add back mbsrtowcs and mbsnrtowcs.

v19

• Fix last commit.