extended datalog + minor bug fixes

Now datalog is created by defaults and includes:

• calc buttons pressed
• button meaning
• stack resgisters and lastx register values at each buttons stroke
• any calc error if encountered

Added option for log calc keystrokes and minor bug fix

option to write datalog file with calc buttons keystrokes
bug fix: numbers not correctly added when enter is pressed after a function

minor changes + bug fix on cursor that stop moving

minor changes + bug fix on cursor that stop moving

Code split into several files + some bug fix

0.8.5

Update LICENSE

buf fix for Factorial function

buf fix for Factorial function

extended factorial to rational numbers

• extended factorial to rational numbers
• double mouse speed
• few bugs fixed

added Display Modes

added Display Modes

added mouse support

added mouse support

added %, INT, FRC function and angular modes (DEG,RAD,GRD)

added %, INT, FRC function and angular modes (DEG,RAD,GRD)

Added clear registers function + bug fixes on update LCD display

Update RPNV.C

Added MIT license