Release 0.2.0

Z-checker 0.2.0 is a stable version that passes a series of tests based on different configurations and datasets. The executables (including examples and executable command) in the Z-checker package can be used to do the regression testing. The best testing methods are still using z-checker-installer. We also provided the support of Travis CI for the test of continuous integration. Specifically, it creates an individual working space for each simulation dataset such that its compression assessment results would not be affected by the package update or the assessments of other datasets.

Some new features in 0.2 compared with 0.1 are listed as follows (more details could be referenced according to the commits history)

Web visualization module f SZ has been updated.
fix a bug in computing the entropy for serial version.
fix bugs in CMakelists.txt
revise user guide based on online functions.
add heat distribution MPI code example to demonstrate how to use online functions.
add 2D SSIM calculation.
add/test laplace derivative metric.
remove costly default functions in z-checker-installer, such as autocorrelation.