Updated FAQ

web/faq.html

@@ -1,5 +1,7 @@
-<details open><summary><strong>Python 2 or Python 3?</strong></summary><br>
-&nbsp;&nbsp;&nbsp;&nbsp;Python 3.8 (or higher).
+<details open><summary><strong>Which Python version is this for?</strong></summary><br>
+&nbsp;&nbsp;&nbsp;&nbsp;Everything should work in the latest Python version, that is 3.13.<br><br>
+&nbsp;&nbsp;&nbsp;&nbsp;Every feature that requires version higher than 3.8 has that mentioned in comments or brackets. There are only six such features, four requiring 3.9, and two requiring 3.10.<br><br>
+&nbsp;&nbsp;&nbsp;&nbsp;As of 12th March 2024, the only libraries whose latest version requires Python version higher than 3.8 are: numpy, pandas and matplotlib. They all require Python 3.9. 
 </details><br>
 
 <details open><summary><strong>What is the best way to use it?</strong></summary><br>