assertions version 1.4.0 has been released!

This package adds some additional assertions to Test::Unit::Assertions,
including:
* Assertions for all of the comparison operators
(Test::Unit::Assertions#assert_greater_than,
Test::Unit::Assertions#assert_less_than_or_equal_to,
etc.). Shorter aliases also are provided for these
(Test::Unit::Assertions#assert_gt, Test::Unit::Assertions#assert_le, etc.).
* An assertion that verifies that a given block raises a specified exception
with a specified message (Test::Unit::Assertions#assert_raise_message).
This allows full testing of error messages.
* An assertion that verifies that a given block contains an assertion that
fails (Test::Unit::Assertions#assert_fail), which can be used to test new
assertions.
* An assertion that verifies that a given value is false or nil
(Test::Unit::Assertions#assert_not)

Changes:

### 1.4.0 / 2008-06-27
Add an Test::Unit::Assertions#assert_not method that verifies that a value is
false or nil (opposite of the Test::Unit::Assertions#assert method).