Ne change log tweak

Author: PennyWieser

docs/ChangeLog.rst

@@ -5,7 +5,8 @@ Change Log
 
 March 17th, 2026  Penny Wieser - V.1.0.19
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-Following reviewer comments, changed minimisation to use weighted least squares, rather than least squares. This is now default behavoir for diads, for Neon, it is not, but setting minimise='weighted_least_squares' will use it. We suggest you only swap the Ne if you fitted your calibration data using weighted least squares, as we see a slightly larger shift in Ne peak position than for diads, and consistency with Neon lines is key.
+Following reviewer comments, changed minimisation to use weighted least squares, rather than least squares.
+Note, for Neon, if you calibrated with the older versions of Diadfit, you should set minimise='least_squares' in step1, as we see a slightly larger shift in Ne peak position than for diads, and consistency with Neon lines during calibration is key. Realistically it only seems to affect the density by 0.001 g/cm3 anyway.
 
 Jan 21st, 2026  Penny Wieser - V.1.0.16
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