Return the actual column instance instead of just the name
If order should be reversed, read the `order_by_column` defined clustering order and reverse it instead of always using `:desc`
Allow use of host IP from environment variable
Mind the `order_by_column` clustering order when fetching in batches
Set `order` to `:desc` on `PublishedPost` model to be able to properly test the `#reverse` method; test examples impacted by this change are adapted (reversed expected results); now using `PublishedPost` instead of `Post` for the `#reverse` examples.
Add `sort_direction` method to DataSetBuilder
Define RecordSet#ascends_by? and #descends_by?

Use these to determine sort column order and to figure out which direction to
go in batches
Upgrade to RSpec 4
Remove deprecation errors
Use transpec to convert to expect() syntax for forward compatibility
Removed unused shared example
Fix deprecation
Merge pull request #166 from outoftime/rspec_3

Upgrade to RSpec 3
Make Rake tasks work without Rails

* Define an empty `:environment` task (this won't override an existing one)
* Check if `Rails` constant is defined; if not, project root is working
  directory
Merge pull request #167 from outoftime/rails_in_rake

Make Rake tasks work without Rails
Run tests in parallel before release
Merge pull request #168 from outoftime/parallel-tests

Run tests in parallel before release
Bump version to 1.4.3
Pull list of available Cassandra versions from Apache archive
Round time to nearest millisecond when serializing for CQL

Previously we were using '%L' which implicitly rounds down to millisecond
precision.