v6.0.0 Breaking changes: * Move gRPC server to its own crate (swh-graph-grpc-server) * Move dataset-writer to its own crate (dataset-writer) * Switch from stderrlog to env_logger (`-vv` on executables is now the default, and log level is tuned with `RUST_LOG=debug`) * Switch MPH algorithms for new compressed graphs from GOV to PTHash * Move the FCL from java_compat/fcl.rs to front_coded_list/read.rs * Removed all Java code New features: * Add support for reading graphs with PTHash instead of GOV * Switch from stderrlog to env_logger * Add load_full() shorthand for loading a bidirectional labeled graph with all properties * Replace load_{uni,bi}directional with Swh{Uni,Bi}directionalGraph::new * Add SwhFullGraph trait "alias" to simplify types * Prioritize target/ over global installs when running Rust executables * stdlib: add find_head_revision() * Log gRPC requests Soundness fixes (Rust) * NodeBuilder: Remove empty data struct when another node type's data is requested * Replace Write::write() with Write::write_all() Soundness fixes (Python): * Add missing "node." prefix to FieldMasks passed to FindPath{To,Between} Performance improvements: * Parallelize merging in par_sort_arcs * EDGE_LABELS: Remove unnecessary dependencies * PERMUTE_LLP: The base graph does not need to be loaded in memory * Replace GNU sort with custom sorters * Switch swh-graph-extract to jemalloc * Don't materialize vec of values while building MPHs * Update default gammas Documentation: * Update compression documentation * Improve error when .labeloffsets file is missing * Make quickstart and gRPC documentations easier to understand