Improvements over 0.3.0b2

 - Minor installation bug fix
 - Minor bugfix for FVA
 - Performance improvement in double deletion

Improvements over 0.3.0b1:

- installation improvements
- updates to documentation
- misc bugfixes in
    - qp
    - cglpk solver
    - double deletion multiprocessing

Changes in 0.3.0b1:

 - faster solver interface
 - faster fva and single/double deletions with new interface
 - cython-based glpk solver
 - more flux analysis tools (pFBA and phenotypic phase planes)
 - sbml fbc support
 - improvements to ArrayBasedModel
 - access read-only attributes for gene/reaction/metabolite relationships
 - simplified installation
 - python3 support

version 0.2.1

0.2.0 release