Remove const from type index ptr

What's Changed

• remove const from type index ptr by @Thanduriel in #8

New Contributors

• @Thanduriel made their first contribution in #8

Full Changelog: v1.3.1...v1.3.2

v1.3.1

include EMSCRIPTEN in member pointer whitelist (#7)

Use member pointer as TypeIndex

For clang and gcc the type index now uses a new implementation based ob the address of a templated struct member. This allows differentiating between anonymous types defined in functions or anonymous namespaces.
For gcc we still use the old implementation as function addresses are not considered constexpr there.

v1.2

make typeID hashable (#2)

v1.1: Add TypeID (#1)

* update readme and add coverage to tests target

* default initialize TypeID values

* include ostream for windows

* test gcc with disabled optimizations

* another test

* try with gcc-9

* use gcc-9 for install test too

* add test notes to readme

Initial release!

v1.0

remove unused includes