[2.1.0] Implement Ruby.

- Destroy some zombie context variables
- Reorganize some TODO items

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1347 48356398-32a2-884e-a903-53898d9a118a

TODO

@@ -7,13 +7,12 @@ TODO List
     ? Maybe I'll Do It
 ==========================
 
+If no interest is expressed for a feature that may required a considerable
+amount of effort to implement, it may get endlessly delayed. Do not be
+afraid to cast your vote for the next feature to be implemented!
+
 2.1 release [Refactor, refactor!]
- # URI validation routines tighter (see docs/dev-code-quality.html) (COMPLEX)
- # Advanced URI filtering schemes (see docs/proposal-new-directives.txt)
- # Ruby support
  - Configuration profiles: predefined directives set with one func call
- - Implement IDREF support (harder than it seems, since you cannot have
-   IDREFs to non-existent IDs)
  - Allow non-ASCII characters in font names
  - Explain how to use HTML Purifier in non-PHP languages / create
    a simple command line stub
@@ -39,6 +38,8 @@ TODO List
 
 2.4 release [It's All About Trust] (floating)
  # Implement untrusted, dangerous elements/attributes
+ # Implement IDREF support (harder than it seems, since you cannot have
+   IDREFs to non-existent IDs)
 
 3.0 release [Beyond HTML]
  # Legit token based CSS parsing (will require revamping almost every
@@ -77,6 +78,8 @@ Unknown release (on a scratch-an-itch basis)
  - Reorganize Unit Tests
     - Refactor loop tests: Lexer
  - Reorganize configuration directives (Create more namespaces! Get messy!)
+ - Advanced URI filtering schemes (see docs/proposal-new-directives.txt)
+ - Implement lenient <ruby> child validation
 
 Requested