Extract enhancements from comments

[DavidGinzberg]

There are some future improvements described in the comments in the source. These should be extracted from the comments and turned into issues on GitHub.

[DavidGinzberg]

//need to add tab completion
// and per-session aliasing
// as well as ^L (FF / 0xC?) functionality (alias to clr)
//want to add colored prompt text

• Add Tab completion
• add per-session aliasing
• Ctrl + L = clear screen
• Colored prompt text (why? status?)
• Add Log Levels to debug function ( void debug(char *err){ //consider adding priority flags as an argument, only print if priority <= DEBUG )
• Extract debug function to a separate library
• Dedup all the fork/exec statements

Fork/exec statements start with the following lines:

     /*fork/exec statement--case 0 is the child process, default is the parent, -1 is an error*/
    switch(childPID = fork()){
        case -1:

[DavidGinzberg]

Once each issue has been created, remove any comments related to it which do not add value to the understanding of the code.