Make predefined functions

[AntonJoha]

An open issue with some things that might or might not be implemented in the future

• [x] If-else
• [x] Exit function
• [x] Standard print
• [x] A function to get value at position X in a list
• [ ] A function to append something to a list

[AntonJoha]

Implement If-else

[AntonJoha]

Implement If-else

https://github.com/AntonJoha/Lisp/issues/12

[AntonJoha]

A standard print function

[AntonJoha]

A function to exit the program

[AntonJoha]

A function to get value at position X in a list

[AntonJoha]

A function to get value at position X in a list

This should also include a shorthanded way of getting the first and last item in a list

[AntonJoha]

A function to make a list out of all the arguments

[AntonJoha]

A function to append something to a list

[AntonJoha]

A function to append something to a list

This should be either, front, back or at position X

[AntonJoha]

Starting with exit in issue #14