0.91 Sat Mar  8 2003

	New Functionality
		- has_many can now take an extra set of search parameters at execution
		- has_many mapping method can now be a list
		- Class->delete(@search_args) deletes all results matching search
		  criteria.  
		- search can take a final hash of arguments. Currently the only one
		  honoured is 'order_by'
		- searches deflate objects passed as search values as with has_a()
		- iterators can be slice()d
		- classes can provide their own iterators 
		- columns in the TEMP column group will be non-persistent
		- set_sql automatically sets up a search_ method for that SQL
		- constraints can cross-check using new syntax, and per_column
		  trigger points.
		- the after_update trigger can modify the list of changed columns
			to change refresh behaviour 
		- Can delete via the iterator: $cd->artists->delete_all
		- New Class::DBI::Query module for dynamically constructing queries
		- Standardised exception handling (thanks to Tim Bunce)
			- on_failed_create no longer needed
		- overloading of objects
		- autoincrements work with SQLite

	Deprecations
		- commit() and autocommit() are now update() and autoupdate()
		- rollback() is now discard_changes()
		- hasa() now warns if used
		- trigger points create() and delete() warn when called
		- trigger point on_setting no longer exists

	Optimisation
		- has_a lazy inflates other Class::DBI instances 
		- roll our own require rather than depending on UNIVERSAL::require
		 (thanks to Tim Bunce)
		- Don't add __Changed = {} to every object on creation,
			just autovivify it on demand. (Tim)
		- Avoid calling $self->primary_column in a loop in create() (Tim)
		- Use fetchrow_arrayref instead of fetchrow_array. (Tim)
		- Return from _deflated_column earlier if value is not a ref. (Tim)
		- Use $sth->{NAME_lc} instead of $sth->{NAME}. (Tim)
		- Optmize _normalized and normalize. (Tim)
		- optimise various calls to columns() (Tim)
		- don't reflesh after an update - defer for lazy loading
		- Iterator no longer inherits from Class::DBI itself.

	Bug Fixes
		- has_many maps now work as iterators
		- columns only report as being in group 'All' if they're in no
		  other columns (so lazy loading works in those cases!)
		- calling create with a primary key of zero no longer attempts to 
			use auto_increment (Tim Bunce)

	Other
		- reference Class::DBI::AbstractSearch
		- retrieve_from_sql removes any leading 'WHERE' 
		- inflate handles overloading better (thanks to Tim Bunce)
		- Avoid boolean test on object, use defined instead.
		- Tweak create() to prepare for possible caching of colmap info.
		- better documentation on transactions
		- test suite now uses DBD::SQLite instead of DBD::CSV
		- consolidated some test scripts

0.90 Wed Nov 27 GMT 2002
		- hasa and associated_class merged (and deprecated) into has_a
			- has_many therefore no longer sets up reciprocal hasa
		- allow search() and search_like() to take multiple columns
		- added find_or_create()
		- add_constructor() is now preferred to make_filter()
		- added retrieve_from_sql() for inline SQL
		- documented running arbitrary SQL and using sth_to_objects to 
			convert these to objects. (Making sth_to_objects public too)
		- has_many can now call a mapping method on the results
			(for simpler many-to-many joins, for example)
		- has_many adds an 'add_to_<whatevers>' method 
			e.g.  CD->has_many(tracks => Track);
			now adds not just 'tracks' method, but also 'add_to_tracks'.
			(thanks to Michael Styer)
		- try to guess table name if none given
		- speed up iterators (thanks to Tom Renfro)
		- added (undocumented) data_type method
			(thanks to Tatsuhiko Miyagawa)
		- renamed column_type() to associated_class()
		- added references to Class::DBI::SQLite, Class::DBI::Pg,
			and Class::Join
		- before_create trigger can now modify object itself
		- uses UNIVERSAL::require instead of rolling our own
		- marked primary_key(), is_column(), add_hook() as deprecated
		- changed _ids_to_objects to receieve listref, rather than list
			to cope with weird bug in 5.005_03 (thanks to Tatsuhiko Miyagawa)
		- warn if column name clashes with built-in method
		- third argument to has_many is now optional, defaulting to our
		  'class-name' (undocumented)
		- provide normalised method names if appropriate (i.e. a Film column
		  will give us methods $obj->Film and $obj->film). This previously
		  happened inconsistently.
		- split most of the column related code to Class::DBI::Columns
		- remove dependency on Class::Fields
		- reference the new Class::DBI mailing lists
		- Give better errors if no database connection set up 
			(thanks to Simon Cozens)
		- A failed create now calls $class->on_failed_create, which by
		  default dies, but can be made to do whatever you like. 

0.89 Mon Jun 24 2002
		- allow has_many to not have a relationship 
			(Thanks to Brian Parker)
		- renamed (undocumented) min() and max() to 
		  minimum_value_of() and maximum_value_of()
		- croak() and carp() deprecated in favour of _croak() and _carp()
		- primary() and essential() deprecated in favour of 
		  primary_key() and _essential()/columns(essential);
		- normalize_one() deprecated in favour of _normalize_one
		- If a 'might-have' link points to nothing, don't give a 'Can't call
		  method' error
		- better reporting on errors from create etc.
		- better reporting when you incorrectly set through hasa()
		- handle primary/foreign key value of zero better
			(reported by Jim O'Brien)
		- added (undocumented) 'column_type' based on ideas from
		  Matthew Simon Cavalletto and Tatsuhiko Miyagawa.
		- brought delete triggers in line with documentation
			(reported by Barry Hoggard, fixed by Tatsuhiko Miyagawa)

0.88 Beltane 2000
    - fix for hasa() and create() with modified accessor/mutator names
      (Thanks to Schwern)

0.87 Fri Mar 29 2002
    * added might_have method
    - better MySQL autoincrement code (fixes occassional problems
       under mod_perl) [Thanks to Tatsuhiko Miyagawa]
    - fixed a test that was failing on 5.005 (but not 5.6.1) due to weird 
      interaction between overloaded iterator and Test::More's ok() 
      prototype  [Thanks to Tatsuhiko Miyagawa]

0.86 Fri Mar  8 GMT 2002
    * removed support for pseudo-hashes
    * hasa_list is now has_many 
      (although has_many still exists for backwards compatability)
    + has_many auto-generates reciprocal hasa decalaration
       (unless called as hasa_list, or with { nohasa => 1 })
    * searches now return iterators when used in scalar context
    - hooks are now called 'triggers' (using Class::Trigger)
    * new trigger for SELECT
    * added basic constraints
    + added support for filters on the same column
      (%s >= ? OR %s <= ?) 
    + added 'between' filter which provides this
    - deal better with the case where the only column group is 'All'
    - much internal twiddly stuff

0.36  Wed Nov 28 2001
    + tests no loner die horribly if you don't have MySQL installed
    - minor tweaks to some error messages
    - bugfixes for problems with auto-deleting objects
    - bugfix for mis-normalized accessor warning
       (thanks to Schwern)

0.35  Sun Oct  7 2001
    + added hooks for create, update and delete
    - split commit() for easier subclassing

0.34  Sat Oct  6 2001
    - Don't die if a value is a reference. (Ima::DBI does this for us,
       and better in case of overloaded objects)
    - fix minor problem with mutual hasa / hasa_list referencing
    - better diagnostics if hasa_list is miscalled

0.33  Sat Sep 15 2001
    + Added create_filter(), and with it retrieve_all()
    + added docs on how to set-up many-to-many relationships
    + _cascade delete now split out to allow overriding
    + copy() and move() can now take multiple arguments to change
       (thanks to Jonathan Swartz)

0.32  Sun Sep  9 2001
    + delete() now removes any foreign elements, to avoid orphans

0.31  Sun Sep  9 2001
    + split out _column_placeholder (thanks to Jonathan Swartz)
    + added hasa() checks for orphaned rows

0.29  Wed Sep  5 10:24:54 BST 2001
    + split docs into Class::DBI::Tutorial
    + renamed is_column to has_column (is_column still provided as alias)
    + added accessor_name and mutator_name form template methods
    - _load_class didn't work. Now fixed.
    - _next_in_sequence was broken, and would warn even if it wasn't.
    - better diagnostics when you call retrieve incorrectly

0.28  Wed Aug 29 20:02:28 BST 2001
    + Tony Bowden took over maintenance
    * Added hasa_list
    - Fixed bug with inherited columns (reported by Boris Mouzykantskii)
    - move() and copy() were broken with auto_increments. Now fixed.
    - set() did bad things if you'd set up new fields with
      mk_accessors (reported by Boris Mouzykantskii). Now fixed.
    - Better errors when calling create() incorrectly
    - Split tests into distinct files (DBD::CSV now required)
    - General internal tidying

0.27  Mon Apr 23 09:04:51 BST 2001
    * Class::DBI->new() deprecated in favor of create()
    - Fixed the 'Primary before All' bug reported by Tony Bowden

0.26  Mon Apr  9 14:32:17 BST 2001
    - Class->columns('All', @cols) now assumes the first column to be
      your primary.
    - Class->columns('Essential', @cols) now automatically includes
      the primary column.
    * move() was broken.  Works and tested.
    - Updated our base requirement to get at its bugfix
    - Updated our Ima::DBI requirement to get at commit() and rollback()
    * Documented construct()
    * Added docs about transactions
    * Added dbi_commit() and dbi_rollback()
    - Added docs about Class::DBI and mod_perl

0.25  Wed Jan 10 01:54:27 EST 2001
    - The new ID is now optional for copy()
    * Added move() to move objects between classes/databases.
    - Updated PG's default attributes.
    - Made the way classes are loaded with hasa() safer

0.24  Thu Oct  5 19:07:21 EDT 2000      *UNRELEASED*
    - Fixed some $@ naughtiness.  Errors should propigate properly.
    * Added default database attributes for Pg, MySQL, Oracle, DBD::CSV and
      DBD::RAM.  Class::DBI should work out of the box with them now.

0.23  Tue Sep 12 00:33:38 EDT 2000
    - rollback() needed to normalize its data (thanks to Greg Bartlett)

0.22  Sun Sep 10 05:36:51 GMT 2000      *UNRELEASED*
    - Added a warning if the primary column is not in the essential group

0.21  Sun Sep 10 01:03:01 EDT 2000      *UNRELEASED*
    - Now requiring Ima::DBI 0.24
    - sequence() fixed, tested and working
    - Now working with DBD::Pg and PostgreSQL 7.0

0.20  Sun Sep 10 00:29:15 EDT 2000      *UNRELEASED*
    - *bug_fix* is_column() died if false.

0.19  Fri Sep  8 15:07:49 EDT 2000
    - Forgot to update the Changes file.

0.18  Fri Sep  9 18:51:45 GMT 2000
    * new() now accepts Class::DBI objects as values
    - hasa() is now inherited properly
    - normalize() will now take an empty array

0.17  Mon Sep  4 02:46:25 GMT 2000      *UNRELEASED*
    - Docs forgot to turn AutoCommit on in MySQL examples
    - Documented the behavior of new() and AUTO_INCREMENT
    - Added support for sequences.  *Untested*
    - *bug fix* columns() can now be added after the class has been used
    - *bug fix* Columns added by hasa() had a chance of overwriting each 
      other.

0.16  Sun Sep  3 17:49:08 GMT 2000      *UNRELEASED*
    * hasa() will now attempt to require the foreign class for you
    * hasa() will setup the necessary columns for you.

0.15  Sun Jul 16 23:14:20 PDT 2000
    - Fixed minor bug in DESTROY message.
    * Added hasa() object relationships.

0.14  Sun Jul  9 05:25:53 EDT 2000
    - Pseudohashes as objects now work and basicly tested
    - The rollback() mechanism changed to use less memory.
    - Expanded the TODO list

0.13  Wed May 24 02:45:43 EDT 2000
    - Accessors were not being generated properly in certain cases.

0.12  Tue May 23 ish...                 * Unreleased*
0.11
    - Aborted attempts to fix accessor misgeneration.

0.10  Thu May 18 00:59:34 EDT 2000
    - new() was not working with objects which autogenerated primary keys

0.09  Tue May  2 00:42:06 EDT 2000
    - README, INSTALL and Makefile.PL have been updated

0.08  Mon May  1 20:27:13 EDT 2000
    - Documented lazy column population.

0.07  Mon May  1 02:18:20 EDT 2000      * Unreleased *
    * Added lazy population of columns.
    - columns('All') can now be autogenerated.

0.06  Mon May  1 00:56:52 EDT 2000      * Unreleased *
    * **API CHANGE** make_sql() is gone in favor of set_sql()
    * normalization has been added in all the right places.
    - retreive now handles autoincremented primary keys.
    - columns() internally normalizes column names.

0.05  Sat Apr 15 01:48:25 EDT 2000
    * MAJOR BUG - simple subclasses of subclasses of Class::DBI would not 
      work.  This has been fixed.
    * Autoloader eliminated.
    * API CHANGE - columns must now be explictly declared, the class's
      public data members are not used.  That was silly.
    * rollback() now works.
    - is_changed() now returns a list of changed columns

0.03  Mon Dec 20 10:04:23 EST 1999
    * MAJOR BUG - commit() was not committing!!!
    * added is_changed()
    - columns('Essential') now autogenerated from columns('All') if not 
      already present.
    - columns('Essential') is now prefered for most SELECT statements 
      instead of just columns().

0.02
    * First working version
    * First version sent to CPAN
