Version 0.03c

Version 0.03c
- Changed working directories for the new project
- Input two if statements to check the length of the logical vectors before using it. It will prevent some errors, which occure with a little data sets
- Created variable x_label and y_label, which now are responsible for the labels. So you can change only them and all method will use their property
- Fixed issue with initialize and downloading plotrix package.