Update Change history

magloop.html

@@ -126,6 +126,9 @@
             [2]: A. Boswell, A. J. Tyler and A. White, <b>"Performance of a Small Loop Antenna in the 3 - 10 MHz Band"</b> <i>, IEEE Antennas and Propagation Magazine, 47, 2, April 2005, pp. 5 1 -56.</i> <br>
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             <b><u>Change history:</u></b><br>
+            <b>[21-Nov-21] - V7</b> <br>
+            * Upgrade Chart.js to the latest version, v3.5.1.<br>
+            * Tooltips are now justified, (using monospace fonts) and support changing metric prefix.<br>
             <b>[27-Sep-21]</b> <br>
             * Added band wavelength to tooltip display. Changed 60 m band from 5.0 to 5.3 MHz..<br>
             <b>[26-Sep-21]</b> <br>