See https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r399386266

See https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401052309

A compile error is now thrown if any operation field type is unsupported
in use in any predicate with any argument type.

See https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r400286103

Unsigned_int is now supported as an integral type

See bitshares#2093 (comment)

Add a cmake template file for the list_#.cpp files and autogenerate them
from the template rather than having 12 almost identical copies of a file

See https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r400317820

See:
https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401581235
https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401581502
https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401582839
https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401583091
https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401588755

See: https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401599873

See: https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401604111

I can still get away with reordering the list like this because it's
never been released yet.

Now allows ==, !=, <, <=, >, >= for stringish types (including hashes
and vector<char>s), container size vs int, and static_variant.which()
values vs int.

vector<char> is no longer considered a container, but is considered
stringish

See:
https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401604111
https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401635775
https://github.com/bitshares/bitshares-core/pull/
2093#discussion_r401642590

Add support for innteger comparisons against a stringish that is not a
container, necessary because vector<char> is no longer a container but
only stringish.