Merge remote-tracking branch 'gh/main' into feat/8jk6.3-date-hierarchy

# Conflicts:
#	context/test-evidence/formula-and-io.md
#	crates/improvise-io/src/import/wizard.rs
#	src/main.rs

README.md

@@ -42,7 +42,7 @@ improvise import examples/demo.csv \
   --measure Revenue --measure Cost \
   --time Date --extract Date:Month --split-date Date \
   --axis Region:row --axis Product:row \
-  --axis Date_Month:column --axis Measure:column \
+  --axis Date_Month:column --axis _Measure:column \
   --axis Customer:page --axis Date:none \
   --formula "Profit = Revenue - Cost" \
   --name "Acme Sales Demo" \