Proposed specification for gsl::dyn_array

[carsonRadtke]

On behalf of the Microsoft/GSL maintainers, we would like to propose a specification for gsl::dyn_array.

Resolves: #2244

See related issues:

• isocpp/CppCoreGuidelines:
  • Clarification for gsl::dyn_array design #1633
• Microsoft/GSL:
  • gsl::dyn_array<T, Deleter>? microsoft/GSL#1169
  • Future of the ms-gsl. Versions, Releases, Supported Compilers, New and Removed features microsoft/GSL#348
  • gsl::dyn_array & gsl::stack_array not found microsoft/GSL#505
  • GSL.owner: Ownership pointers : "dyn_array" microsoft/GSL#890

[hsutter]

Editors call: Thanks, looks good but please:

• @GabrielDosReis add a note that by design there are no iterator/pointer-invalidating operations (other than the destructor)
• ensure that there is no assignment (neither copy nor move)
• add wording for move construction