* bugprone-branch-clone
* bugprone-copy-constructor-init
* bugprone-empty-catch
* bugprone-sizeof-expression
* bugprone-switch-missing-default-case
* bugprone-unused-local-non-trivial-variable
* clang-analyzer-core.uninitialized.Assign
* clang-analyzer-cplusplus.Move
* clang-analyzer-optin.cplusplus.VirtualCall
* modernize-loop-convert
* modernize-raw-string-literal
* modernize-use-equals-default
* modernize-use-override
* modernize-use-using
* performance-avoid-endl
* performance-inefficient-string-concatenation
* performance-inefficient-vector-operation
* performance-noexcept-move-constructor
* performance-unnecessary-value-param (and improve generator example)
* readability-duplicate-include
* readability-inconsistent-declaration-parameter-name
* readability-non-const-parameter
* readability-redundant-casting
* readability-redundant-member-init
* readability-redundant-smartptr-get
* readability-static-accessed-through-instance
* unused variable in amalgamted tests

The license file was renamed with 6a502cc2f5fedd59b3495b58708f0d6d987ed9e1

* GCC5 compat: work around inherited constructor issues

Don't use inherited constructors, forward manually instead. This
basically reverts 61f803126d3cff2195d700d11d07c6578f416b23.

I believe that GCC5 does not implement P0136, a C++17 change that made
inherited constructors actually usable and was backported as a DR all
the way to C++11.

* GCC5 compat: bypass std::pair construction issue

Co-authored-by: Martin Hořeňovský <martin.horenovsky@gmail.com>

The new reporter spec generalizes key-value options that can be
passed to the reporter, looking like this
`reporterName[::key=value]*`. A key can be either Catch2-recognized,
which currently means either `out` or `colour`, or reporter-specific
which is anything prefixed with `X`, e.g. `Xfoo`.