fix warrnings

Author: skywinder

Sources/web3swift/Browser/Bridge.swift

@@ -6,7 +6,6 @@
 //  Copyright © 2017 Samaritan. All rights reserved.
 //
 
-import UIKit
 import WebKit
 
 /// Bridge for WKWebView and JavaScript
@@ -197,7 +196,7 @@ public extension WKWebView {
     }
 
     /// Bridge for WKWebView and JavaScript. Initialize `lazy`
-    public var bridge: Bridge {
+    var bridge: Bridge {
         if let bridge = objc_getAssociatedObject(self, &STPrivateStatic.bridgeKey) as? Bridge {
             return bridge
         }
@@ -207,7 +206,7 @@ public extension WKWebView {
     }
 
     /// Remove Bridge And Reset, All the handlers will be removed
-    public func removeBridge() {
+    func removeBridge() {
         if let bridge = objc_getAssociatedObject(self, &STPrivateStatic.bridgeKey) as? Bridge {
             let userContentController = bridge.configuration.userContentController
             userContentController.removeScriptMessageHandler(forName: Bridge.name)
@@ -218,7 +217,7 @@ public extension WKWebView {
 
 fileprivate extension WKWebView {
 
-    fileprivate func st_dispatchBridgeEvent(_ eventName: String,
+    func st_dispatchBridgeEvent(_ eventName: String,
                                             parameters: [String: Any],
                                             results: Bridge.Results,
                                             completionHandler: ((Any?, Error?) -> Void)? = nil) {

Sources/web3swift/Transaction/EthereumTransaction.swift

@@ -17,6 +17,7 @@ public struct EthereumTransaction: CustomStringConvertible {
     // The destination address of the message, left undefined for a contract-creation transaction.
     public var to: EthereumAddress
     // (optional) The value transferred for the transaction in wei, also the endowment if it’s a contract-creation transaction.
+    // TODO - split EthereumTransaction to two classes: with optional and required value property, depends on type of transaction
     public var value: BigUInt?
     public var data: Data
     public var v: BigUInt = BigUInt(1)