Update magloop.html

Added a change history section in notes.

magloop.html

@@ -99,6 +99,17 @@
             <img src="MagloopEfficiency.png" alt="magloop antenna efficiency"><br>
             <img src="MagloopQ.png" alt="magloop antenna Q factor"><br>
             <br>
+            <b><u>Change history:</u></b><br>
+            [12-Sep-21] : Set maximum values to Q, Vcap and I axes to stop autoscaling. Max Q set to 2000, Vcap to 20 kV and I to 100 A.<br>
+            [12-Sep-21] : Added formula/equation graphics in Notes section. A few more complex ones, such as effective capacitance and SRF, are still needed.<br>
+            [12-Sep-21] : Fixed minor error in calculation of resistive loss due to proximity effect.<br>
+            [11-Sep-21] : Added visual cues for all slider-controlled parameters to highlight which parameter is being modified in the graphic representation.<br>
+            [10-Sep-21] : Added c/a display to graphic representation. Moved N from center to left.<br>
+            [30-Aug-21] : Added SRF calculation and display for multi-loop antennas.<br>
+            [28-Aug-21] : Added support for imperial units and for aluminum metal.<br>
+            [27-Jul-21] : Added total conductor length display.<br>
+            [24-Jul-21] : Added loop circumference display.<br>
+            <br>
             </div>
         </section>
         <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>