update deprecations page

doc/development/deprecations.rst

@@ -21,6 +21,14 @@ Pending deprecations
  - Deprecated in v0.37
  - Will be removed in v0.38
 
+* ``qml.from_qasm`` will no longer remove measurements from the QASM code. Calling ``qml.from_qasm``
+ without specifying ``measurements`` will raise a deprecation warning in v0.37, and in v0.38,
+ the default behaviour will be changed to keeping measurements. Use ``measurements=[]`` to remove
+ measurements from the original circuit.
+
+ - Deprecated in v0.37
+ - Default behaviour will be changed in v0.38
+
 New operator arithmetic deprecations
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~