Whippet documentation

Manual: How do you get your program to use Whippet? What is the API?
Collector implementations: There are a number of implementations of the Whippet API with differing performance characteristics and which impose different requirements on the embedder.
- Semi-space collector (semi): For single-threaded embedders who are not too tight on memory.
- Parallel copying collector (pcc): Like semi, but with support for multiple mutator threads. Faster than semi if multiple cores are available at collection-time.
- Whippet collector (whippet): Immix-inspired collector. Optionally parallel, conservative (stack and/or heap), and/or generational.
- Boehm-Demers-Weiser collector (bdw): Conservative mark-sweep collector, implemented by Boehm-Demers-Weiser library.
Guile: Some notes on a potential rebase of Guile on top of Whippet.