fix macOS build (following Projucer changes made in Windows, which removed /Applications/JUCE/modules from its headers). move JUCE headers under source control, so that Windows and macOS can both build against same version of JUCE. remove AUv3 target (I think it's an iOS thing, so it will never work with this macOS fluidsynth dylib).

modules/juce_analytics/analytics/juce_ButtonTracker.h

@@ -0,0 +1,80 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2017 - ROLI Ltd.
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
+   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
+   27th April 2017).
+
+   End User License Agreement: www.juce.com/juce-5-licence
+   Privacy Policy: www.juce.com/juce-5-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+
+//==============================================================================
+/**
+    A class that automatically sends analytics events to the Analytics singleton
+    when a button is clicked.
+
+    @see Analytics, AnalyticsDestination::AnalyticsEvent
+
+    @tags{Analytics}
+*/
+class JUCE_API  ButtonTracker   : private Button::Listener
+{
+public:
+    //==============================================================================
+    /**
+        Creating one of these automatically sends analytics events to the Analytics
+        singeton when the corresponding button is clicked.
+
+        The name and parameters of the analytics event will be populated from the
+        variables supplied here. If clicking changes the button's state then the
+        parameters will have a {"ButtonState", "On"/"Off"} entry added.
+
+        @param buttonToTrack               the button to track
+        @param triggeredEventName          the name of the generated event
+        @param triggeredEventParameters    the parameters to add to the generated
+                                           event
+        @param triggeredEventType          (optional) an integer to indicate the event
+                                           type, which will be set to 0 if not supplied.
+
+        @see Analytics, AnalyticsDestination::AnalyticsEvent
+    */
+    ButtonTracker (Button& buttonToTrack,
+                   const String& triggeredEventName,
+                   const StringPairArray& triggeredEventParameters = {},
+                   int triggeredEventType = 0);
+
+    /** Destructor. */
+    ~ButtonTracker();
+
+private:
+    /** @internal */
+    void buttonClicked (Button*) override;
+
+    Button& button;
+    const String eventName;
+    const StringPairArray eventParameters;
+    const int eventType;
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ButtonTracker)
+};
+
+} // namespace juce