Fix dropped non-string parameters types

[Eli-Liebman]

I ran into some bugs after updating from 1.5 to 1.6 and I tracked it down to a change that was made when converting the Objective-C version of the TDOAuth class to Swift.

Objective C:

 if (unencodedParameters != nil) {
        queryItems = [NSMutableArray new];
        for (NSString *key in unencodedParameters.allKeys) {
            TDOQueryItem *queryItem = [TDOQueryItem itemWithName:key value:unencodedParameters[key]];
            [queryItems addObject:queryItem];
        }
    }

Swift:

if let unencodedParameters = unencodedParameters {
           for key in unencodedParameters.keys {
               if let key = key as? String,
                   let value = unencodedParameters[key] as? String {
                   let queryItem = TDOQueryItem(name: key, value: value)
                   queryItems.append(queryItem)
               }
           }
       }

The let value = unencodedParameters[key] as? String in the Swift version causes any value type that isn't a String to be ignored and dropped. My particular issue was losing my integer parameters but I added Bool handling while I was in there.

I think that should be enough but can add more if needed.

[stury]

Thanks @Eli-Liebman !

[adamkaplan]

Nice find. That must have been frustrating..

Did you consider if there’s a way to catch all with this protocol? https://developer.apple.com/documentation/swift/string/init(_:)-1ywfq