Update changelog and documentation.

CHANGELOG.md

@@ -2,6 +2,9 @@
 All notable changes to this project will be documented in this file.
 
 ## Unreleased - ???
+- Define `next`, `get`, and `in` for fibers. This lets
+  `each`, `map`, and similar iteration macros can now iterate over fibers.
+- Remove macro `eachy`, which can be replaced by `each`.
 - Add `dflt` argument to find-index.
 - Deprecate `file/popen` in favor of `os/spawn`.
 - Add `:all` keyword to `ev/read` and `net/read` to make them more like `file/read`. However, we

src/boot/boot.janet

@@ -901,7 +901,7 @@
   ret)
 
 (defn map
-  `Map a function over every element in an indexed data structure and
+  `Map a function over every value in a data structure and
   return an array of the results.`
   [f & inds]
   (def ninds (length inds))