Include What You Use Versions Save

• [iwyu] New command-line option: --keep to mirror IWYU pragma: keep
• [iwyu] New command-line option: --cxx17ns to suggest compact C++17 nested namespaces
• [iwyu] Improve --no_fwd_decls to optimize for minimal number of redeclarations
• [iwyu] Improved mappings for POSIX types and let mappings apply to builtins as well
• [iwyu] More principled handling of explicit template instantiations
• [iwyu_tool] Breaking change: extra args are no longer automatically prefixed with -Xiwyu (so you can use them for Clang args too)
• [iwyu_tool] Better Windows support
• [fix_includes] Better handling of template forward-decls

• [iwyu] Improved recognition of template and specialization uses
• [iwyu] Improved CMake build system, see docs for build instructions
• [mappings] Improved mappings for Boost, Intel intrinsics and libstdc++
• [iwyu_tool] Several bug fixes and improvements
• [iwyu_tool] Add --basedir argument to interpret IWYU output from another source tree
• [fix_includes] Handle namespaces better
• [fix_includes] Add --only_re switch to filter affected files
• [fix_includes] Add --reorder/--noreorder switch to toggle reordering of includes

IWYU 0.9 release