v17.2.0rc1

Stability improvements

• BucketManager: move garbage collection out of shutdown. Fixes a potential crash on shutdown.
• Initialize CommandHandler last. Fixes a potential crash on startup.
• Herder: process old slots correctly
• Rebuild ledger tables on schema upgrade
• Strengthen seqnum validation
• make static arrays safe (old style doesn't enforce proper size at compile time)
• Visual C++ fixes and warnings
• SCP: Remove unused includes of crypto/SHA.h
• Only define gExplicitSeed when BUILD_TEST is
• Refactor BucketListGenerator to fix broken acceptance test
• SCP: Slightly reduce dependency on crypto/SecretKey.h
• Add variety to the fuzzer

New features

• Diagnostic tools. Adds new metrics to monitor archives.

Breaking changes

• Probe working-ness of <filesystem> more aggressively. This improves detection of broken (6+ years old) toolchains when building.
• Remove deprecated --reply-in-memory command line option
• Change OperationID to use an AccountID instead of MuxedAccount. Marked as a breaking change for visibility.