NEWS updated, many changes moved to CHANGES, which is a manually written change log that contains all user-visible changes.

git-svn-id: https://svn.apache.org/repos/asf/incubator/couchdb/trunk@663925 13f79535-47bb-0310-9956-ffa450edef68

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+Version 0.8.0
+(?? Jun 2008, from /incubator/couchdb/branches/0.8.x)
+-------------------------------------------------------------------------------
+
+Database Core:
+
+ * The view engine has been completely decoupled from the storage engine.
+   Index data is now stored in separate files, and the format of the main
+   database file has changed.
+ * Databases can now be compacted to reclaim space used for deleted documents
+   and old document revisions.
+ * Support for incremental map/reduce views has been added.
+ * To support map/reduce, the structure of design documents has changed. View
+   values are now JSON objects containing at least a "map" member, and
+   optionally a "reduce" member.
+ * View servers are now identified by name (for example "javascript") instead
+   of by MIME type.
+ * Automatically generated document IDs are now based on proper UUID
+   generation using the crypto module.
+ * The field "content-type" in the JSON representation of attachments has
+   been renamed to "content_type" (underscore).
+
+HTTP Interface:
+
+ * CouchDB now uses MochiWeb instead of inets for the HTTP server
+   implementation. Among other things, this means that the extra configuration
+   files needed for inets (such as couch_httpd.conf) are no longer used.
+ * The HTTP interface now completely supports the HEAD method. (COUCHDB-3)
+ * Improved compliance of Etag handling with the HTTP specification.
+   (COUCHDB-13)
+ * Etags are no longer included in responses to document GET requests that
+   include query string parameters causing the JSON response to change without
+   the revision or the URI having changed.
+ * The bulk document update API has changed slightly on both the request and
+   the response side. In addition, bulk updates are now atomic.
+ * CouchDB now uses TCP_NODELAY to fix performance problems with persistent
+   connections on some platforms due to nagling.
+ * Including a `?descending=false` query string parameter in requests to views
+   no longer raises an error.
+ * Requests to unknown top-level reserved URLs (anything with a leading
+   underscore) now return a "unknown_private_path" error instead of the
+   confusing "illegal_database_name".
+ * The Temporary view handling now expects a JSON request body, where the JSON
+   is an object with at least a "map" member, and optional "reduce" and
+   "language" members.
+ * Temporary views no longer determine the view server based on the
+   Content-Type header of the POST request, but rather by looking for a
+   "language" member in the JSON body of the request.
+ * The status code of responses to DELETE requests is now 200 to reflect that
+   that the deletion is performed synchronously.
+
+Javascript View Server:
+
+ * SpiderMonkey is no longer included with CouchDB, but rather treated as
+   a normal external dependency. A simple C program (_couchjs) is provided
+   that links against an existing SpiderMonkey installation and uses the
+   interpreter embedding API.
+ * View functions using the default Javascript view server can now do
+   logging using the global `log(message)` function. Log messages are
+   directed into the CouchDB log at INFO level. (COUCHDB-59)
+ * The global `map(key, value)` function made available to view code has been
+   renamed to `emit(key, value)`.
+ * Fixed handling of exceptions raised by view functions.
+
+Build, Scripts, and System Integration:
+
+ * CouchDB can automatically respawn following a server crash.
+ * Database server no longer refuses to start with a stale PID file.
+ * System logrotate configuration provided.
+ * Improved handling of ICU shared libraries.
+ * The `couchdb` script now automatically enables SMP support in Erlang if
+   available.
+
+Futon Utility Client:
+
+ * When adding a field to a document, Futon now just adds a field with an
+   autogenerated name instead of prompting for the name with a dialog. The
+   name is automatically put into edit mode so that it can be changed
+   immediately.
+ * Fields are now sorted alphabetically by name when a document is displayed.
+ * Futon can be used to create and update permanent views.
+ * The maximum number of rows to display per page on the database page can now
+   be adjusted.
+ * Futon now uses the XMLHTTPRequest API asynchronously to communicate with the
+   CouchDB HTTP server, so that most operations no longer block the
+   browser.
+ * View results sorting can now be switched between ascending and descending
+   by clicking on the "Key" column header.
+ * Fixed a bug where documents that contained a "@" character could not be
+   viewed. (COUCHDB-12)
+ * The database page now provides a "Compact" button to trigger database
+   compaction. (COUCHDB-38)
+ * Fixed portential double encoding of document IDs and other URI segments in
+   many instances. (COUCHDB-39)
+ * Improved display of attachments.
+ * The Javascript Shell has been removed due to unresolved licensing issues.