[ruby/matrix] Add Matrix::VERSION constant
Add Matrix::VERSION for the gem version, use it in the gemspec, and make it also available for library users.
https://github.com/ruby/matrix/commit/65c2bb1fa1
[ruby/matrix] Add Matrix::VERSION constant
Add Matrix::VERSION for the gem version, use it in the gemspec,
and make it also available for library users.
https://github.com/ruby/matrix/commit/65c2bb1fa1