Change the XMLSummary ref files to work for Python 3.8

See merge request !2917

Fix to known platforms and clang 11 warning

See merge request !3073

Flexible UT hits container

See merge request !3035

Add new platforms strings to PlatformInfo

See merge request !3062

Only look for depth specifiers at string ends

Closes #134

See merge request !3066

Modernize UT

See merge request !3054

Getters for UT decoding in Allen

See merge request !2924

Add a RawBank::types() which returns a range of RawBank::BankTypes

See merge request !3059

Modernize old GOD-generated event headers

See merge request !3058

Closes #134.

add check for UT rawbank size consistency

See merge request !3063

move UTDigitsOnBoard and UTBoardToBankMap implementations into the sole component source file using them

* add [[nodiscard]]
* add constexpr
* add helper functions to deal with masked quantities
* add some asserts
* remove unneccessary destructors
* prefer STL algorithms
* have setters return reference to this
* prefer std::nearbyint over std::nearbyintf
* prefer private over protected
* prefer range-based loops

Add functional raw event combiner

Closes #101

See merge request !3043

... and adapt some loops over BankTypes

Extend the unknown-attributes warning workaround to ROOT 6.24

See merge request !3048

* add [[nodiscard]]
* do _not_ inject GaudiUtils::operator<< into namespace LHCb
* define one-line inline functions when they are declared
* do not add redundant destructor declarations
* have setters return reference to *this
* prefer direct member initialization

* move m_bankTypes initalization from initialize into update handler
* check that all types specify actually exist
* make it an error if a given type is seem more than once

patch generated by https://gitlab.cern.ch/lhcb/LHCb/-/jobs/13485697