feat: add field comments, local time zone decoding and in-value cancellation

Assisted-by: GLM 5.3 Flash

CHANGELOG.md

@@ -49,6 +49,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `ParseAs[T](data)`, the generic one-line decode, and `NewSchema[T]()`,
   which precompiles the struct schema and the interface flags for a hot path
   before the first document arrives.
+- `Encoder.EmitFieldComments()` prints the comment a field's `toml` tag
+  carries in a `comment=` option above the field's line or header, the
+  comments a round trip through the Go type would otherwise drop. Go doc
+  comments are not visible to reflection, so the tag is the channel that
+  carries the text.
+- `Decoder.LocalTimeLocation(loc)` lets a local date-time fill a plain
+  `time.Time` destination in the location given, relabelled rather than
+  shifted: `07:32` in the document is `07:32` in the zone. Without the
+  option the wrapper types remain the only destinations a local kind fills.
+- The parse checks its context inside a value as well as between statements:
+  an array, an inline table and a multi-line string check every 64 elements
+  or lines, so one huge value cannot hold the parse past its cancellation.
 - `OrderedMap`, the string-keyed table that remembers the order its keys were
   set in: decoding into one fills it in the order the document wrote the
   keys, and `Marshal` writes one back in that order, where a map carries no