As of C++20, range based `for` supports that the end
iterator has a different type. This allows to implement
so called sentinels tagging the end. This can make it
simpler and more efficient to implement ranges where
it's not straight forward to get the end in O(1) or
where comparing real iterators is expensive.
To support this approach, this adds support for using a
different type for the end iterator to `Dune::IteratorRange`.

Santiago Ospina De Los Ríos authored 4 months ago and Christoph Grüninger committed 1 month ago

Add constexpr qualifiers on many functions
Add constexpr backport versions of std::abs and std::sqrt

It's a long log.  It has subsections but nobody seems to care.
The patch introduces a few more subsections, and actually fills
them will the appropriate content.

While this may seem like an invasive patch, no content
is actually added.  It's all restructuring.

Document required Python version consistently.

Add support for  Python tuples in the cppType function
Add support for the standard protocol for tuple-like types to `TupleVector`