iyi 0.16.0

The language takes regex literals and writes JSON itself. /a+b/
in an iyi file compiles once through std/regex, and derive serializable gives a struct or class to_json and from_json, a key
per field (SPEC.md II.4). exit(status), a range of characters and %g
arrive with them. One change breaks source: assigning through ::
(::foo = 1) is a syntax error that names the local's spelling, where
the :: was dropped without a word. And puts of a string that already
ends in a newline writes no second one, as Crystal's does.

Faster, and Math answers glibc's bits. crystal-metric's port is a
gate, and it runs in 0.84 of Crystal 1.21's time (geomean 0.86, three
rounds on one machine). The collector hands a page of chunks out per
carve, marks a small live set inside its stop, keeps the empty arenas a
deep budget will fill again, and marks, sweeps and runs its write
barrier in fewer instructions. Math.exp, pow, log, exp2, log2,
log10, expm1 and log1p are glibc's unfused routines to the last
bit, pow three times as fast as before - a result can differ from
0.15.4's in its last bit. Sorting, hashing, BigInt printing, reading
JSON, Base64 and inflating cost what their input does. A class instance
equals itself and hashes by its address, so a Set of them finds what
was added to it.

Windows answers as the other platforms do. Twenty-two fixes from
running the library and the CLI there: files a program is denied, has
open elsewhere, hides or links to; ports another program holds, large
backlogs, a close under a parked read; Ctrl+Z at a console; paths in
another case, drive-relative and \\?\. Two answers change: a read
Windows refuses is a failure where it was an empty file, and a failed
write panics once. .iyimod is still v54, so 0.15.4's artifacts are
rebuilt only because the compiler's version is in their identity.