Apply fixits of clang-tidy's readability-braces-around-statements checker.
Use clang-tidy's readability-simplify-boolean-expr checker. After applying the fix-its, revise all changes *very* carefully. Be aware of false positives and invalid changes.
Add support for this feature added by QtIFW 2.0.3: http://doc.qt.io/qtinstallerframework/ifw-updates.html Add a `cpack_ifw_update_repository` command as porcelain.