Let Isotropic_Sqw be in "Experimental" state

Author: willend

CHANGES_McXtrace

@@ -89,7 +89,8 @@ CHANGES in 3.1
  Components and Instruments:
  - The Isotropic_Sqw sample which can be used to model structure and dynamics in isotropic
    materials, such as powders and liquids has been added. The component is developed by
-   Emmanuel Farhi and also exists in the McStas code.
+   Emmanuel Farhi and also exists in the McStas code. The component is currently in
+   "Experimental" state in McXtrace.
  - Multiple new SOLEIL instruments have been added, thanks to lots of work from Antoine Pado,
    Stephane Bac and Emmanuel Farhi:
    * SOLEIL_ANATOMIX.instr tomography beam-line
@@ -245,7 +246,8 @@ CHANGES in 1.7.1
  Components and Instruments:
  - The Isotropic_Sqw sample which can be used to model structure and dynamics in isotropic
    materials, such as powders and liquids has been added. The component is developed by
-   Emmanuel Farhi and also exists in the McStas code.
+   Emmanuel Farhi and also exists in the McStas code. The component is currently in
+   "Experimental" state in McXtrace.
  - Multiple new SOLEIL instruments have been added, thanks to lots of work from Antoine Pado,
    Stephane Bac and Emmanuel Farhi:
    * SOLEIL_ANATOMIX.instr tomography beam-line