Attempt to fix Ruby 3.0 ArgumentError (fixes #15)
Attempt to fix Ruby 3.0 ArgumentError (fixes #15)

  1) Error:
PackableDocTest#test_doc:
ArgumentError: tried to create Proc object without a block
    /<<PKGBUILDDIR>>/debian/ruby-packable/usr/share/rubygems-integration/all/gems/packable-1.3.14/lib/packable/extensions/io.rb:76:in `initialize'
    /<<PKGBUILDDIR>>/debian/ruby-packable/usr/share/rubygems-integration/all/gems/packable-1.3.14/lib/packable/extensions/io.rb:76:in `new'
    /<<PKGBUILDDIR>>/debian/ruby-packable/usr/share/rubygems-integration/all/gems/packable-1.3.14/lib/packable/extensions/io.rb:76:in `each_with_packing'
    /<<PKGBUILDDIR>>/test/packing_doc_test.rb:22:in `test_doc'

marcandre/packable