increment to version 0.8.2

increment to version 0.8.1

increment to version 0.8.0

increment to version 0.7.0

increment to version 0.6.0

increment to version 0.5.5

increment to version 0.5.4

fix setup.py data & increment to 0.5.3

increment to version 0.5.0

fixes xgi#17
fixes xgi#18
fixes xgi#24

increment to version 0.4.2