Update documentation: *:* and +:+ are deprecated.
Don't double-link object files built from generated C.
Merge pull request #221 from yallop/duplicate-objects

Don't double-link object files built from generated C.
Add mean FFI call latency by arity by interpretation microbenchmark
bench_micro: more descriptive graph legends
bench_micro: test up to 15-ary, move chart key to top left
Merge pull request #222 from dsheets/bench_micro

Add mean FFI call latency by arity by interpretation microbenchmark