Release 0.11.0

Release 0.10.3 fixes #69 and #73

Release 0.10.2 fixes #72

Release 0.10.1 fixes #71

Release 0.10.0 fixes #65, #67, #68

Release 0.9.2 fixes #64

Note: With MSVC Debug, a span cannot be created from an empty range,
like: std::vector v; span(v.begin(),v.end()).

This behaviour is present since the introduction of construction from iterators in v0.9.0.

Release 0.9.1, closes #64

Release 0.9.0

Release 0.8.1

Release 0.8.0