Changes included in this version

Major changes

• Deprecation of multi_span and strided_span.

Minor changes

• Additional constexpr support
• Bug fixes

What to look forward to in future releases

• The GSL is changing how it handles contract violations.
• The test framework is being replaced with GoogleTest to accommodate the contract violation changes.

Additional information on contract violation changes

Previous behavior on contract violation

• Option to ignore, terminate, or throw on contract violation.

New behavior

• Contract violation will always result in termination.