remove some TODOs

Signed-off-by: Doug Davis <[email protected]>

README.md

@@ -119,18 +119,10 @@ TODOs:
 - create an UpdateDefaultVersion func in resource.go to move it from http logic
 - support ximport
 - support validating that xref points to the same resource def
-- test xref more
-  - in particular PATCH on an xref resource where body doesn't have xref
-  - testing doing a PUT/POST/PATCH on an xref - fail? ignore attrs?
 - support readonly - remove resource.readonly
 - remove "readonly" attribute from model Resources, add to Resource
 - format is optional in schema spec
-- s/format/envelope/
-- s/message/protocoloptions/
-- s/binding/protocol/
-- add envelopeoptions and envelopmetadata
 - allow $meta on hasdoc=false resources
-- add "validation" attribute - schema
 - error w/o ?nested + children
 - Add content-disposition header for hasdoc resources
 - inline=model, requires ?nested. Make sure /meta requires ?nested too