Gtl Versions Save

• Cleanup some clang-tidy warnings.
• Bump version to 1.1.8

• Disable assert causing duplicated hash calls when NDEBUG is not defined.
• Remove deprecated use of std::aligned_storage.
• Fix clang-15 warnings
• Make Throw a macro, for platforms missing definitions for std::*_error types.
• swap allocators only if permitted by AllocTraits.
• Add example mt_word_counter
• Fix issue where entries could be marked as created even when the memory allocation fails, causing an exception when they are deleted later.

• Update phmap::Hash so that std::hash<Foo*> can be overridden
• cleanup some incorrect file modes

Creating a new release so the version encoded in gtl_config.hpp matches the release.

• Fix bogus MSVC Win32 signed/unsigned mismatch warnings in tests
• Fix GCC-8 warning: ‘no_unique_address’ attribute directive ignored
• Remove unused macros
• Remove unused constant variable & rename used constant variable
• Add attribute [[maybe_unused]] to unused functions
• Enable unused warning
• Remove unused includes
• fix dump_nested.cpp example
• Allow swap() to work with parallel hash maps/sets with different mutex types, so you can use the same container with or without locking.

This is just equivalent to v1.1.0 with some changes to CMakeLists.txt.

• Work around a vcpkg issue

• Added memoize classes for efficient memoization of function calls.
• Improved lru_cache and added efficient multi-thread version using phmap comtainer and extended APIs.
• Added intrusive_ptr class modeled after the boost one.
• Suppress warning in btree.hpp
• Fix imperfect hash for tuple of small integers - better implementation of gtl::HashState().combine() from boost
• Switch to Semantic versioning scheme

Minor changes and updates.

GTL initial release