Update NEWS for 5.0.0-rc1

NEWS

@@ -1,41 +1,70 @@
+Changes between 4.6.2 and 5.0.0 (as of 2014-01-12)
+==================================================
+This release contains backwards-incompatible changes. See
+http://willie.dftba.net/willie_5.html for more information.
+
+Module changes (for users):
+* YouTube no longer shows bizarre lengths when the bot is running under Python 3
+* When Wikipedia links are posted, a snippet of the article is shown
+
+Core changes (for users):
+* WillieDB is entirely rewritten, meaning migration will be needed to access old data
+* Logging output to the debug channel is improved
+* The name of the NickServ user can be configured with nickserv_name in [core]
+
+API changes (for developers):
+* Deprecated WillieDB functions are removed
+* CTCP actions are stripped prior to matching, and added to the 'intent' key of trigger.tags
+* Deprecated Trigger functions are removed
+* bot.debug is removed, in favor of standard Python logging
+* tools.Nick is removed, in favor of the tools.Identifier introduced in 4.6.0
+
 Changes between 4.6.1 and 4.6.2
 ===============================
 This release starts preparations for Willie 5. See http://willie.dftba.net/willie_5.html
 for more information.
+
 Module changes (for users):
 * Due to API deprecation and instability, .g now uses DuckDuckGo instead of Google
+
 Core changes (for users):
 * Fix remaining regression in db update function
 
 Changes between 4.6.0 and 4.6.1
 ===============================
 This release starts preparations for Willie 5. See http://willie.dftba.net/willie_5.html
 for more information.
+
 Module changes (for users):
 * Fix regression in table creations and erroneously changed column names
+
 Core changes (for users):
 * Fix regression in db update function
+
 API changes (for developers):
 * Correctly print out deprecation warnings
 
 Changes between 4.5.1 and 4.6.0
 ===============================
 This release starts preparations for Willie 5. See http://willie.dftba.net/willie_5.html
 for more information.
+
 Module Changes (for users):
 * The ^ operator in .calc is now equivalent to **
 * .dice, .tr, and .addtrace give meaningful errors when no argument is given
 * A number of database issues were fixed (more will be fixed in Willie 5)
 * A number of Python 3-related issues were fixed.
 * Malicious URLs are now detected with VirusTotal and malwaredomains
 * .weather no longer shows pressure
+
 Core changes (for users):
 * The config wizard no longer configures the database, instead automatically creating a sqlite db
 * MySQL and Postgres databases are deprecated; only sqlite will be supported in Willie 5
 * Logging channel and level can be configured with logging_channel and logging_level in the config
 * A --version switch was added to the willie command, to show the version in use
 * Corrupt PID files will no longer prevent the bot from starting
 * Non-ASCII values no longer crash the config wizard
+
 API changes (for developers):
 * Numerous functions were added to the db to ease the transition to Willie 5
 * tools.Nick has been renamed tools.Identifier. Nick will be removed in Willie 5