CHANGES_DATABASE

Changes to a database schema are documented here.
All SQL here is for PostgreSQL dbms, but should be easily adaptable for sqlite
or mysql. See respective db docs for precise syntax.
New models (tables) and MtM (Many-to-Many) relationships (also tables) can be
created by running "./manage.py syncdb".

0.9.16 - 0.9.16-fg5:

	- "filter" and "filter_base" tables, can be created by syncdb

	- "feed.immutable" (BooleanField) and "feed.skip_errors" fields (BooleanField)
		ALTER TABLE feedjack_feed ADD COLUMN immutable boolean NOT NULL;
		ALTER TABLE feedjack_feed ADD COLUMN skip_errors boolean NOT NULL;

	- Feed.filters MtM relationship, can be created by syncdb
	- "feed.filters_logic" field (PositiveSmallIntegerField)
		ALTER TABLE feedjack_feed ADD COLUMN filters_logic smallint NOT NULL;

	- extended "feed.etag" field length constraint 50->127
		ALTER TABLE feedjack_feed ALTER COLUMN etag TYPE varchar(127);

	- extended "tag.name" field length constraint 50->127
		ALTER TABLE feedjack_tag ALTER COLUMN name TYPE varchar(127);

	- extended "post.title" and "post.link" fields' length constraint 128/255->2047
		ALTER TABLE feedjack_post ALTER COLUMN title TYPE varchar(2047);
		ALTER TABLE feedjack_post ALTER COLUMN link TYPE varchar(2047);
	- extended "post.guid" field length constraint 200->511
		ALTER TABLE feedjack_post ALTER COLUMN guid TYPE varchar(511);
	- extended "post.author" field length constraint 50->255
		ALTER TABLE feedjack_post ALTER COLUMN author TYPE varchar(255);
	- extended "post.comments" field length constraint 255->511
		ALTER TABLE feedjack_post ALTER COLUMN comments TYPE varchar(511);

	- "post.hidden" field (BooleanField)
		ALTER TABLE feedjack_post ADD COLUMN hidden boolean NOT NULL;

	- "post.date_created" and "post.date_updated" auto-fields (DateTimeField)
		ALTER TABLE feedjack_post ADD COLUMN date_created timestamp with time zone NOT NULL;
		ALTER TABLE feedjack_post ADD COLUMN date_updated timestamp with time zone NOT NULL;

	- "post.filtering_result" (NullBooleanField)
		ALTER TABLE feedjack_post ADD COLUMN filtering_result boolean;