Keep already-implemented features in a separate file

TODO/FEATURES.md

@@ -5,30 +5,7 @@ Please list yourself as stakeholder so we'd know whom to contact if we need
 clarification. If possible, find a volunteer willing to implement your
 proposal (it could be you).
 
-# ALREADY IMPLEMENTED FEATURES
-
-These features are already available with the C<use v6.d.PREVIEW> pragma.
-
-## [IMPLEMENTED] Consistify Naming of `$*INITTIME`
-
-All of our other multi-word dynvars use kebobcase, so `$*INITTIME`
-should be re-named ~~`$*INIT-TIME`~~
-[`$*INIT-INSTANT`](https://github.com/perl6/roast/issues/296#issuecomment-324719710)
-
-There is some mention of it on 5to6 docs and IRC logs, so there
-should be some deprecation period for the old name.
-
-See also:
-- https://github.com/perl6/roast/issues/296
-- https://github.com/perl6/doc/issues/1462
-- https://github.com/perl6/doc/issues/510
-- https://github.com/perl6/roast/issues/296#issuecomment-324719710
-
-### Implementor
-
-Zoffix
-
-## [IMPLEMENTED] Non-blocking await
+## [PARTIALLY IMPLEMENTED] Non-blocking await
 
 *Note: appears to be implemented, but [based on
 this comment](https://irclog.perlgeek.de/perl6-dev/2017-07-06#i_14835079) looks
@@ -56,11 +33,6 @@ Jonathan Worthington
 
 ???
 
---------------
---------------
---------------
---------------
-
 # IN NEED OF IMPLEMENTATION
 
 ## `use v6.d.PREVIEW` in wrong place needs to throw

TODO/completed-FEATURES.md

@@ -0,0 +1,20 @@
+
+This document contains already implemented planned changes for v6.d.
+See [FEATURES.md](FEATURES.md) for features yet to be implemented.
+
+## [IMPLEMENTED] Consistify Naming of `$*INITTIME`
+
+All of our other multi-word dynvars use kebobcase, so `$*INITTIME`
+should be re-named ~~`$*INIT-TIME`~~
+[`$*INIT-INSTANT`](https://github.com/perl6/roast/issues/296#issuecomment-324719710)
+
+There is some mention of it on 5to6 docs and IRC logs, so there
+should be some deprecation period for the old name.
+
+See also:
+- https://github.com/perl6/roast/issues/296
+- https://github.com/perl6/doc/issues/1462
+- https://github.com/perl6/doc/issues/510
+- https://github.com/perl6/roast/issues/296#issuecomment-324719710
+
+