- implementing tuple_tags::supports
- implementing debug_type_if and debug_type_unless
- fixing a handful of template predicate applications in type_list and in some transforms
- implementing constant_array
- implementing constant_sequence::{array|z_array} in terms of constant_array
- implementing constant_sequence::{data|z_data}
- replacing usage of {constant_sequence|type_string}::z_array.data() by {constant_sequence|type_string}::z_data()
- implementing unitary_union
- implementing uninitialized in terms of unitary_union
- changing a few names in call_traits_test.cpp
- updating README.md
- removing gflags dependency