teko_std 0.28.1

v0.28.1: in lockstep with teko 0.28.2 on mc 1.0.1

teko v0.28.2 completes the this-as-value page: fluent chaining pinned by a
fixture with falsifiable rt_live() assertions, and 'this' inside a struct
refused with its own message (teko-lang #769, D103). One escape hatch closes
with it, 'public uptr Raw() { return this; }' inside a struct.

The library declares no struct and returns no this, so nothing here moves.

Tree hash 936a7d16546235990eb38ba1c99a8a9f9be852b00376c3eec7871b3aec47eba5.

Gate, macos/aarch64, mc 1.0.1: strings_test 42, strings_panic_test 70,
'ok language: 19 tracked sources carry no Portuguese'.

Proven by the teko_std CI gate over this tag: two native legs
(linux/x86_64, macos/aarch64), each building the taught teko compiler
from teko v0.28.2 and running every fixture with it, plus the
language check.

Pinned dependency: teko 0.28.2

No binaries are attached: this is a source library, and the archive a
consumer (or the mc registry) fetches is this tag's own source archive.