v0.11.0

Bug fixes

• Subcommand data member was not correctly initialized if command line has no argument for it.
• --help/-h did not show correct help screen in case of default subcommand.

Enhancements

• MutuallyExclusive and RequiredTogether can be marked as required:

  struct T
  {
      @RequiredTogether()
      {
          string a;
          string b;
      }
  }
  
  // Both or no argument is allowed
  assert(CLI!T.parseArgs!((T t) {})(["-a","a","-b","b"]) == 0);
  assert(CLI!T.parseArgs!((T t) {})([]) == 0);
  
  // Only one argument is not allowed
  assert(CLI!T.parseArgs!((T t) { assert(false); })(["-a","a"]) != 0);
  assert(CLI!T.parseArgs!((T t) { assert(false); })(["-b","b"]) != 0);

  struct T
  {
      @(RequiredTogether().Required())
      {
          string a;
          string b;
      }
  }
  
  // Both arguments are allowed
  assert(CLI!T.parseArgs!((T t) {})(["-a","a","-b","b"]) == 0);
  
  // Single argument or no argument is not allowed
  assert(CLI!T.parseArgs!((T t) { assert(false); })(["-a","a"]) != 0);
  assert(CLI!T.parseArgs!((T t) { assert(false); })(["-b","b"]) != 0);
  assert(CLI!T.parseArgs!((T t) { assert(false); })([]) != 0);