Add additional attributes to Hit per issue #16
Merge pull request #26 from chrisconley/qualification-exists

Update qualification builder to support :exists => true
Merge pull request #27 from chrisconley/approve-rejected

Add support for ApproveRejectedAssignment

Closes #24 as well
Move back to real escape XML response, Unescape Hit/Question tree
Merge pull request #25 from seeingidog/master

Add additional attributes to Hit per issue #16
Correct the const value for :abandoned_rate
Merge pull request #28 from karimn/master

Fixing a minor bug in a constant value
Update to 2.9.0
Use UTC ISO8601 timestamp in requests.
Cleanup Gemfile. Make it use gemspec.
Add rake development dependency.
Add specs for retrieving specific assignments.
Pass specific assignments retrieval.
Merge pull request #30 from bobbytables/feature/add_assignment_type_option

Feature/add assignment type option
Bump to v2.10.0

Added changes from PR #30
Change memoization on assignments to be based on options.
Merge pull request #31 from bobbytables/change/fix_memoization_on_hit_assignments

Change/fix memoization on hit assignments
Fix for memoization #31 - v2.10.1
Merge pull request #32 from learnable/9b9bbad5fec138db28741a9090b4c2123397fdc6

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