Update for @openfisca/ast changes.

package-lock.json

package.json

...lib/components/scholar_waterfalls/ScholarWaterfall.svelte

src/lib/components/test_cases/TestCaseEdit.svelte

src/lib/components/test_cases/TestCaseView.svelte

src/lib/components/variables/VariableView.svelte

src/lib/decompositions.ts

src/lib/server/decompositions.ts

src/lib/variables.ts

src/routes/__layout.svelte

src/routes/index.svelte