Updating history and a version bump for release

version bump and history edit for release

Changing to the MIT license.

closes TwP#24

Using built in Time yamlization

When serializing timestamps to YAML format it is better to just let the YAML
layer handle it instead of converting the time to a string ourselves. The JSON
serialization of time now uses a timestamp in ISO8601 format with
microseconds.

History edit and version bump in preparate for a release.

Returning a duplicate list of appenders

version bump

updating version and history for release

ignoring the tmp folder

Calling super within a block is broken.

A regression was introduced into ruby 1.8.7 after p174 that breaks the ability
to call "super" within a block. The rolling file appender relies on this
ability to wrap up writes to the log file inside an "flock" block.

The fix is to alias the write method and then call the alias from within the
block.