Axiom

Major:

- (107) Passwords are now stored hashed; make use of the APIs introduced in
0.8.0 to set or change passwords.

Minor:

- (115) Axiom's internal schema now quotes all names to avoid collisions with
future SQLite reserved words.

Major:

- (87) Axiom now creates tables with an explicit `INTEGER PRIMARY KEY`
column, which means that `VACUUM` will no longer corrupt the database.
`axiomatic upgrade` will migrate the existing tables in a store; as every
table must be copied, this may take a while on large stores.
- (91) `axiom.userbase.LoginAccount` now has `setPassword` and
`replacePassword` methods. In a future version plaintext passwords will no
longer be stored at all, so applications must be migrated away from direct
`LoginAccount.password` use.
- (89) `axiom.store.Store` takes a new parameter `journalMode`, and
`axiomatic` a corresponding `--journal-mode` argument. The SQLite journal
mode will be set to this value when the store is opened, and substores will
inherit the setting. The current default is `None` which sets no mode at
all, but this will change to `u'WAL'` in a future version.


Minor:

- (69) The exception raised when a store's persisted schema does not match the
in-memory schema now shows the differences.
- (68) ORDER BY is now suppressed for deleteFromStore with no LIMIT.
- (88) There is a new empowerment decorator for bestowing
`powerupInterfaces` on an `Item`.

Major:

- Python 2.6 is now unsupported, due to Twisted dropping 2.6 support.
- Fix an issue where the value of a reference pointing at a legacy item (ie.
created in an upgrader) could be lost once the upgrade completed in some
circumstances.
- All `attributes.bytes` comparisons based on the `LIKE` SQL operator (`like`,
`notLike`, `startswith`, and `endswith`) are deprecated. If SQLite was
compiled with the `SQLITE_LIKE_DOESNT_MATCH_BLOBS` option (such as the
Debian package does from version 3.10.0-1), these comparisons are always
false; and even when this option is not active, the behaviour of the `LIKE`
operator with `BLOB` values is unexpected (the operands are cast to `TEXT`
before the comparison is done).

Minor:

- `axiomatic start` needs to handle some `twistd` arguments specially;
fix an issue where arguments in the `--arg=value` form were not detected
correctly (the `-a value` and `--arg value` forms were always detected
correctly, so you can use these with older versions, if necessary).

Major:

- Fix an issue preventing compatibility with Twisted 15.3.0.

Major:

- Fix another major issue involving a bad interaction between legacy items
(mainly in upgraders), and object lifetimes. This is another very important
fix for PyPy users.

Major:

- Fix a major issue involving a bad interaction between weakref semantics and
the item cache. This is a very important fix for PyPy users.