Merge pull request #563 from meatballhat/unquote-more-chars

Allow more chars in unquoted text formatter output

text_formatter.go

@@ -153,7 +153,7 @@ func (f *TextFormatter) needsQuoting(text string) bool {
 		if !((ch >= 'a' && ch <= 'z') ||
 			(ch >= 'A' && ch <= 'Z') ||
 			(ch >= '0' && ch <= '9') ||
-			ch == '-' || ch == '.') {
+			ch == '-' || ch == '.' || ch == '_' || ch == '/' || ch == '@' || ch == '^' || ch == '+') {
 			return true
 		}
 	}