Pre-release: 0.0.1

This is release 0.0.1, geared towards gcc and clang compilers on Linux and Mac.

This is a nearly complete release, missing only bpstd::variant implementation.
This currently does not compile successfully on Windows for either cl or clang-cl

This includes the following types:

• bpstd::span
• bpstd::to_address
• bpstd::make_unique_for_overwrite
• bpstd::any
• bpstd::string_view
• bpstd::optional
• bpstd::invoke
• bpstd::not_fn
• bpstd::make_from_tuple
• bpstd::apply
• bpstd::byte
• bpstd::make_unique
• _t convenience traits
• _v convenience variables (when compiling with -std=c++14)
• deduced functional objects