Query with comparison on boolean column results in "Invalid type: Invalid Type [BOOL]: Invalid type for index"

[mrigger]

Consider the following statements:

CREATE TABLE t0(c0 BOOL UNIQUE);
INSERT INTO t0(c0) VALUES (0);
SELECT * FROM t0 WHERE t0.c0 = true; -- Error: Invalid type: Invalid Type [BOOL]: Invalid type for index

Unexpectedly, the SELECT results in an error Error: Invalid type: Invalid Type [BOOL]: Invalid type for index.

I found this issue based on the latest master branch (commit 9795d18).

[Mytherin]

Fixed in 331cce4, this is a continuation of #504, with another missing boolean type in the index except now for lookups. All the boolean types should now be properly handled by the index.