2021-05-27 Rec v32r1

This version uses Lbcom v32r1, LHCb v52r1, Gaudi v35r4 and LCG 100 with ROOT 6.24.00.

This version is released on master branch. Built relative to Rec v32r0, with the following changes:

Tracking VP | Add full search mode to Velo Tracking, !2364 (@ahennequ)
Tracking VP Monitoring | Track VP Overlap monitor, !2398 (@bimitres)
Calo | Bremsstrahlung-track matching with selective search in calo, !2267 (@mveghel)
Composites Functors | BPVLTIME ThOr Functor added, !2283 (@vrenaudi)
Composites Event model | Add a Generic Track SOA Container, !2356 (@agilman)
Filters | Support filtering SharedObjectsContainer views, !2425 (@apearce)
MC checking | Add VeloHits, VeloTracks, UTHits and FThits to PrMultiplicityChecker, !2322 (@rlitvino)

Decoding UT | Recovery for badly encoded UT raw bank, !2439 (@graven)
Tracking | Fix init of MeasurementProviderT to avoid segfault if UseBfield=true, !2440 (@chasse)
Tracking | Fix minimize function in Measurement.cpp, !2438 (@chasse)
Tracking | PrKalmanFilter: fix creation of Rich1 states, !2414 (@chasse)
Tracking PV finding | Fix issues uncovered by Clang 11, !2449 (@rmatev)
Build | Extend the unknown-attributes warning workaround to ROOT 6.24, !2419 (@clemenci)

Tracking | Add MaxNumTracks property in VertexListRefiner, !2442 (@bimitres)
Tracking | PrKalmanFilter: add alignment derivatives & classical smoother iteration, !2433 (@chasse) [#179]
Tracking | New ghost rejection NN for PrForwardTracking, !2397 (@gunther) [Event/LHCb__Converters__Track__v1__fromV2TrackV1Track#4]
Tracking | PrForwardTracking redesign, !2352 (@gunther) [#157,#162,#38] ⭐
Tracking | Remove the partners of VP outliers, !2339 (@valukash)
Tracking UT | Adapt Pr algorithms for change in UT sector handling, !2404 (@decianm)
Tracking Conditions | Reset caches when updating geometry for alignment (DD4hep), !2396 (@sponce)
Calo | Ecal clustering sanity checks, !2351 (@cmarinbe)
Composites Monitoring | Fix bias in pv created in Vertex Monitor, !2391 (@ahennequ)
Monitoring | Clean up Run2 stuff in TrackMonitor, !2390 (@peilian) [challenge#2]
Monitoring | VPTrackSelector hit side with module, !2389 (@bimitres)

Configuration | Follow LHCb!2963, !2366 (@apearce)
Decoding | Unify UT decoders interface, !2386 (@graven)
Tracking | Move StateZTraj to TrackFitEvent, !2401 (@graven)
Tracking | Simplify Measurement & Projectors, !2400 (@graven)
Tracking | Remove TfKernel / TsaKernel / TsaAlgorithms, !2384 (@graven)
Tracking | Cleanup TrackEventFitter and TrackBestTrackCreator, !2368 (@chasse)
Tracking | Made TrackContainerCopy functionnal, !2359 (@sponce)
Tracking UT | Change PrUTHitHandler and algorithms for SOACollection, !2422 (@decianm)
Tracking Monitoring | Small modifications in TrackResChecker, !2395 (@ausachov)
Muon | Remove MuonClusterTool and MuonTimeCor, !2373 (@pkoppenb)
PID | Remove beginEvent method from IGhostProbability interface, !2387 (@graven)
Functors | Functors/Composite: require less template arguments to be specified, !2372 (@graven)
MC checking | Modernize PrimaryVertexChecker, !2388 (@graven)
MC checking | Refactoring PrimaryVertexChecker, !1925 (@twojton) ⭐
Monitoring | Clean and modernize VPTrackMonitor, !2435 (@bimitres)
Build | Add missing links to libraries, !2410 (@clemenci)
Update reference files from nightly slot lhcb-head, build ID 2934. To be tested with !2404, !2427 (@ascarabo)
Add assert to AddHit to validate input, !2399 (@graven) [#193]
Avoid unnecessary reinterpret_cast, !2393 (@graven)
Update references for !2351, !2381 (@fsouzade)
Undo SmartRefVector workaround following merge of gaudi/Gaudi!1180, !2363 (@chasse)

Tracking | Add warning to IdealStateCreator about non-ideal states, !2421 (@chasse) [#196]
Update CONTRIBUTING.md to update supported platforms, !2412 (@cattanem)