Fix compiling on macOS High Sierra (#665)

* mac docs update relating to qt 

give a little more detailed installation guide for the qt installation

* Fix compiling on clang, now compiles on macOS High Sierra

src/providers/twitch/PubsubHelpers.hpp

@@ -1,7 +1,7 @@
 #pragma once
 
 #include "util/RapidjsonHelpers.hpp"
-
+#include "debug/Log.hpp"
 #include <boost/asio.hpp>
 #include <boost/asio/steady_timer.hpp>
 #include <memory>

src/providers/twitch/TwitchChannel.cpp

@@ -409,7 +409,7 @@ void TwitchChannel::refreshLiveStatus()
     //>>>>>>> 9bfbdefd2f0972a738230d5b95a009f73b1dd933
 
     request.onSuccess(
-        [this, weak = this->weak_from_this()](auto result) -> Outcome {
+        [this, weak = weakOf<Channel>(this)](auto result) -> Outcome {
             ChannelPtr shared = weak.lock();
             if (!shared) return Failure;
 
@@ -550,7 +550,7 @@ void TwitchChannel::refreshChatters()
 
     request.setCaller(QThread::currentThread());
     request.onSuccess(
-        [this, weak = this->weak_from_this()](auto result) -> Outcome {
+        [this, weak = weakOf<Channel>(this)](auto result) -> Outcome {
             // channel still exists?
             auto shared = weak.lock();
             if (!shared) return Failure;

src/widgets/BaseWindow.cpp

@@ -316,7 +316,7 @@ void BaseWindow::mousePressEvent(QMouseEvent *event)
             };
 
             if (!recursiveCheckMouseTracking(widget)) {
-                Log("Start moving");
+                log("Start moving");
                 this->moving = true;
             }
         }
@@ -331,7 +331,7 @@ void BaseWindow::mouseReleaseEvent(QMouseEvent *event)
 #ifndef Q_OS_WIN
     if (this->flags_ & FramelessDraggable) {
         if (this->moving) {
-            Log("Stop moving");
+            log("Stop moving");
             this->moving = false;
         }
     }