Add a function to check error between GPU and CPU.
Add a testing program.
[Test] New testing data and scenario.
Standalone FILE I/O functions in device_matrix.h
[Bug Fixed] in copy contructor. More test cases.
Add a macro gaurd if there's no host_matrix.
Merge branch 'feature/testing' into develop
Remove color.h/matrix.h from #include.
Add a macro gaurd if there's no host_matrix.
Merge branch 'release/v0.1'