Log Message:
iwyu 0.8:
Add support for IWYU pragma: associated
Better validation of pragma syntax in general.
Improve support for out-of-tree builds, especially with MSVC.
Add more compiler-like output for iwyu_tool.py
Further improve location reporting in macros.
Stricter requirements for arrays of templates.
Better recognition of typedef types for by-value arguments.
Better function pointers support.
Documentation improvements.
Extend IWYU pragma: keep to work with forward declarations.
Fix Windows path handling in fix_includes.py
Better libc++ container support.