Multiple API changes, significant performance improvements, and bug fixes for Windows.
* New GatingResults class for reporting gating statistics
* Significant performance improvements in calculating gated events
* Support for multi-processing for evaluating gates
* New C-extension for calculating events in PolygonGates
* Cleaner API for user interaction
* New Session class for combining multiple Samples with a GatingStrategy
* tSNE support for multiple Samples in a Session
* Automatic generation of a compensation matrix from a set of bead files
* Simplified API for exporting Sample events
* Multiple bug fixes for Windows