docs: contributor list/agreement cleanup

CONTRIBUTORS

@@ -1,49 +1,64 @@
-==============================
+Contributor List and Agreement
-Contributor Agreement and List
 ==============================
 
-hledger Contributor Agreement
+hledger Contributors
-=============================
+--------------------
-This is the official contributor agreement, version 1, and contributor
+hledger is brought to you by:
-list for the hledger project. If you have contributed code to hledger, you
-should sign this, to help ensure:
 
-1. that there is a clear audit trail and legal status for the project
+- Simon Michael - lead developer, project manager, general dogsbody
+- Sergey Astanin - utf8 support
+- Nick Ingolia - parser improvements
 
-2. that we are able to remain license-compatible with future versions of other
+Developers who have not yet signed the contributor agreement:
-   free & open-source software packages, by updating to current versions
-   of the license(s) when appropriate
-
-3. that you get proper credit for your work.
-
-How to sign
------------
-Send a darcs patch adding your name to the hledger Contributor List below.
-By so doing you promise that all of your commits to hledger:
-
-- are free of patent violations or copyright violations, to the best of
-  your knowledge.
-
-- are released under the hledger project's license (which is GNU GPL v3 or
-  later); or are released under another compatible license (in which case
-  this must be clearly noted); or are public domain.
-
-- may be relicensed under official future versions of their license at the
-  project leader's discretion, if that seems useful.
-
-
-hledger Contributor List
-========================
-- Simon Michael - lead developer, project manager
-- Sergey Astanin
-- Nick Ingolia
-
-Other contributors
-------------------
-Developers who have not yet signed this agreement:
 
 - Tim Docker
 
-Folks who have contributed in ways other than committing code:
+.. - parser, cabal improvements
+
+Also:
+
+- John Wiegley - created the original ledger program
+
+.. raw:: html
+ <br>
+
+----
+
+.. raw:: html
+ <br>
+
+hledger Contributor Agreement
+-----------------------------
+This is the official contributor agreement (v1) and contributor list
+for the hledger project. If you have contributed significant code
+change to hledger, please sign this, to help ensure:
+
+1. that there is a clear legal status and audit trail for the project
+
+2. that you get proper credit for your work
+
+3. that we are able to remain license-compatible with related software
+   by updating to newer versions of our license when appropriate
+   (eg GPLv2 -> GPLv3)
+
+To "sign", read the conditions below and then send a darcs patch to
+this file_  adding your name to the Contributor List above.  By so
+doing you promise that all of your commits to hledger:
+
+- are free of patent violations or copyright violations, to the best of
+  your knowledge
+
+- are released under the hledger project's license_; or are released
+  under another compatible license (in which case this must be clearly
+  noted); or are public domain
+
+- may be relicensed under official future versions of their license 
+  at the discretion of the project leader
+
+We don't currently gather paper signatures, but this is a good start.
+Feel free to update your entry as your contributions grow!
+
+
+.. _license: http://joyful.com/repos/hledger/LICENSE
+.. _file:    http://joyful.com//darcsweb/darcsweb.cgi?r=hledger;a=filehistory;f=/CONTRIBUTORS
 
-- John Wiegley - design and implementation of the ledger program