snapshot of branches

[tjjfvi]

[I'm deleting old branches; saving links here for posterity]

• 26c48fb chore/sc-484/optimize-pre-reduce-pass
• d755c94 direct_deref_experiment
• a7bf4c1 feature/sc-173/add-n-ary-ctrs-to-hvm-core
• c03e4a3 feature/sc-177/implement-parallel-rust-cpu-runtime
• 8c8dbc5 feature/sc-213/implement-numeric-operations-in-the-hvm-core
• 2bd8d8e feature/sc-84/describe-the-semantics-of-the-runtime-in
• a870726 flat-heap
• f3135d7 main
• 54b4cf1 negative_cost_abstractions
• 65a6b5a parallel-locking
• d322f5a parallel-olivenke
• 3e82b9b parallel-work-stealing-fast
• d3e23f4 parallel-work-stealing-queue
• 473298e parallel-work-stealing-randomized-order
• a61bd56 parallel-work-stealing-randomized-order-add-redex-count-diff-to-total
• 5fd6ef3 parallel-work-stealing-randomized-order-atomic-total_redex_count
• 24b5bfd parallel_cpu_wip
• 9a6ba4c parallel_fast_incomplete
• 3110de1 parallel_slow_complete
• 74ae424 ptr-refactor-alt-link
• ea9385f redirect_free
• 335e40a rework-expand
• 50c7188 rust_transmute_not_zero_cost
• 17d2f3d sequential
• 495ac80 tmp_debug