Calculator Group 1 v4

final build

requires java 8+

includes history as per request from instructor

Calculator Group 1 v3

Added ++ and --

Fixed error in not properly detecting variables with no value.

All required features are now implemented and working.

This will be the version that would be given to the teacher for checking and revision.

Requires java 8 or higher to run

Calculator Group 1 v2

Requires java 8 or higher to run.

Fixed possible bugs with regex and negation button

Possible improvements:
Better UI design.
Help options.
On/Off button (?)

Calculator Group 1 v1

Requires java 8 or higher

Features such as arithmetic, relational, logical, and assignment operators are now implemented.

Arithmetic only release

This will require the user to have java 17 or newer to run.