Address most occurrences of:
bugprone-unused-local-non-trivial-variable
bugprone-unhandled-self-assignment
bugprone-misplaced-widening-cast
bugprone-sizeof-expression
performance-for-range-copy
performance-faster-string-find
performance-inefficient-vector-operation
performance-noexcept-swap
misc-unused-using-decls
misc-header-include-cycle
misc-include-cleaner
readability-delete-null-pointer
readability-container-size-empty
readability-redundant-smartptr-get
readability-else-after-return

Michael Kuron authored 4 years ago and Markus Holzer committed 4 years ago

Some optional components use Boost MultiArray and PropertyTree, so we still include the headers if available.
We also still search std::experimental for any, filesystem and optional because some otherwise C++17-compliant compilers did not support them in std until recently.

This check seems to be buggy and often crashes clang-tidy.

[ADD] boost*
[ADD] mpi*
[ADD] openmp*
[ADD] portability

added filter to exclude external libraries