Bumps most of our dependencies.
Code changes:
* algebraic-graphs-0.3 no longer provides a Foldable or Traversable
implementation for `Graph`, so now neither does our `Graph` type.
* CMark parsing now uses safe rendering of raw HTML/URLs by default,
so there is no reason to pass an `optSafe` anymore.
* algebraic-graphs now no longer requires an Eq constraint on the
output type it generates, so we can ditch our Serializing.DOT
module. (Andrey fixed this for us specifically!)
Because we're getting serious about benchmarking in the run-up to
Windrose, it's time to bring in the `deepseq` package to ensure that
benchmarks can fully evaluate the result of a test case.
The `deepseq` package provides an `NFData` typeclass:
```
class NFData a where
rnf :: a -> ()
```
Instances use the `seq` combinator to ensure that the argument to
`rnf` is fully evaluated, returning (). If there is a `Generic`
instance for `a`, the implementation can be omitted. This patch adds
NFData for every syntax node, graph vertex, environment data
structures, and exceptions. It is long, but the work is very
straightforward, so don't panick.
The benchmark suite (`stack bench`) now produces more accurate
results. The benchmarks previously mimicked `rnf` by calling `show` on
the result of an evaluation or graph construction; now that we have
actual `NFData` instances we can use the `nfIO` combinator from
criterion. This has sped up the evaluation benchmarks and reduced
their memory consumption, while it has slowed down the call graph
benchmarks, as those benchmarks weren't evaluating the whole of the
graph.
Unfortunately, this patch increases compile times, as we have to
derive a few more Generic instances. I wish this weren't the case, but
there's little we can do about it now. In the future I have some plans
for how to reduce compile time, and I bet that those gains will at
least nullify the speed hit from this patch.
Now that we have NFData instances for every data type, we can start
benchmarking assignments, in preparation for fixing #2205.
This patch also pulls in updates to `effects` and `fastsum` that add
appropriate NFData instances for the data they vend.
The major bumps we get here are `algebraic-graphs` v0.2, which
contains a number of speed improvements, and the removal of the
`foundation` as a dependency.
