* Added parameter `array-strictness', default #t
* Added `array-default-strict!' and `array-default-strict', which act
like the functions without "default" in the name when
`array-strictness' is #t; otherwise they do nothing
* Lots of small changes to existing array functions, mostly to ensure
computations are done using nonstrict arrays, but return values are
strict when `array-strictness' is #t
* Added strictness tests
* Added tests to ensure untyped code can use `math/array'
* Rewrote `array-map' exported to untyped code using untyped Racket
* Rearranged a lot of `math/array' documentation
Cleaned up expected value code a little
Refactored running statistics objects (hid private fields, added
`update-statistics*')
Documented expected value functions and running statistics
Removed `bfpsi0' from bigfloat tests (DrDr's libmpfr doesn't have it)
Commented out custodian shutdown callback that frees MPFR's cache
(something's broken)
Refactored many of the fold functions (e.g. `array-axis-andmap' is gone,
replaced by short-cutting `array-axis-and', which is sufficient because the
result of `array-map' is non-strict; added `array-count', `array-all-fold';
removed `array-all=' and friends)
Turned common folds into macros (preserves return types better, speeds up
compilation time)
Exposed a safe variant of `unsafe-array-axis-reduce'
in the original GitHub fork:
https://github.com/ntoronto/racket
Some things about this are known to be broken (most egregious is that the
array tests DO NOT RUN because of a problem in typed/rackunit), about half
has no coverage in the tests, and half has no documentation. Fixes and
docs are coming. This is committed now to allow others to find errors and
inconsistency in the things that appear to be working, and to give the
author a (rather incomplete) sense of closure.
