The constexpr belongs to the declaration specifiers (like static) and
not just the type specifiers (like cv-qualifiers), so it binds to
the declaration (like static), not the type (like const).
Refines #211
Run clang-tidy 7.0 with -checks='-*,modernize-use-using' -fix
against TU-s of examples.
Manually refactor numerous typedef-s where missed by modernize-use-using
check, not uncommon in code snippets in comments.
Outcome is that searching for lower-case whole word typedef
in sources of all the tests should return only handful of matches
in boost/gil/extension/dynamic_image/apply_operation_base.hpp
Add point2<T> alias template for backward compatibility with Boost <=1.68.
Replace multiple point_t aliases of point<ptrdiff_t> with single defined
in point.hpp. The point_t is common used to represent dimensions.
Replace many uses of point<ptrdiff_t> with point_t.
Apply reformatting around point2 changes to respect the line length limit.
Follows up discussion in #154
Group include directives, sort within group:
* In headers of GIL core and extensions:
1. boost/gil/extension/*
2. boost/gil/*
3. boost/*
4. C++ standard library headers
* In programs:
1. boost/gil/*
2. boost/*
3. C++ standard library headers
4. "xxx.hpp" for local headers
Add basic guidelines to CONTRIBUTING.md.
Add/Remove #include <boost/config.hpp> or std headers un/necessary.
Rename gil_concept.hpp to concepts.hpp.
Remove gil_all.hpp - we already have all-in-one boost/gil.hpp.
Tidy up and unify copyright and license header.
Tidy up formatting and excessive whitespaces in some comments.
Remove Doxygen block with file description, author, date, etc.
Remove dead or commented pragmas and directives.
Trim trailing whitespaces.
