Address more warnings (#605)

* Ignore deprecation warnings in tests

* fwd.hh: Add HPP_FCL_COMPILER_DIAGNOSTIC_IGNORED_MAYBE_UNINITIALIZED

* Address Wmaybe-uninitialized

* Address more Wpedantic

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* Fix HPP_FCL_COMPILER_DIAGNOSTIC_IGNORED_MAYBE_UNINITIALIZED

* Update CHANGELOG

* [CI] Reactivate Rolling

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* [CI] Disable Rolling again, still failing

* Fix macro check build failure

* Change to logic that works with both gcc and clang

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* Another attempt at fixing the macro checks

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* Fix macro with gcc

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* One more pedantic

* Conversion (template parameter type matching)

* URL fix

* Fix gcc Wconversion in macro

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