Added --systemd and --out-pid to CLI tables
Fixed unit tests.
Fixed table.has_value and table.has_key using "*" in expects instead of "any"
Fixed math.round
Fixed `escape.html` not correctly escaping an ampersand.
Made `htt_safechar` easier to read/interpret.
Fixed escape.sql (escaping is done by doubling, not prefixing with a backslash).
Added a nosave arg to `script.parse_arguments` for unit testing.