Short-circuiting Boolean "and" and "or" operators.

c/testdata

@@ -254,3 +254,9 @@ def inc(x): x |= .+1; inc(.[].a)
 [{"foo":[1,2], "bar": 42}, {"foo":[1], "bar": null}, {"foo":[null,false,3], "bar": 18}, {"foo":[], "bar":42}, {"foo": [null,false,null], "bar": 41}]
 [[1,2], [1], [3], [42], [41]]
 
+.[] | [.[0] and .[1], .[0] or .[1]]
+[[true,[]], [false,1], [42,null], [null,false]]
+[true,true]
+[false,true]
+[false,true]
+[false,false]