Fixed issues
- 1071: Cannot get TeXworks version: QString::arg: 1 argument(s) missing in TeXworks %1 (%2) [r.%3, %4]
- 1079: spell check is gone
- 1090: "Too many open files" errors with xelatex
- 1112: [BUG]: wrong version number for miktex-dvisvgm-bin-x64-2.9
- 1120: can't build format of platex/platex-dev
- 1121: \pdffilesize doesn't work correctly in eptex and perhaps other engines