In the name of two-part functions, '.' changed to '_'. For example, the function
'Boik.test' changed to Boik_test.
All reports of tests are tidy and justified.
The function 'interactionplot' changed to 'interaction_plot'
The function CPI_test changed to 'CI_test'.
The function 'justify' were added as utiles functions to make tidy the reports.
Some unit tests were added to the package.
CI_test, Boik_test, Piepho_test, 'KKSA_test', 'KKM_test', 'Malik_test', and Franck_test. Some typos were corrected in function documents. In addition, ITtestClass_methods, combtest_methods, and plots` were improved.