Probably the best way to begin getting involved with the project is to join the mailing list at http://lists.sourceforge.net/lists/listinfo/peep-develop and begin posting your suggestions/comments. If you have any patches that you'd like to submit or would like to get involved developing code, please send email my way mgilfix@eecs.tufts.edu or Collin Starkweather's way at collin.starkweather@colorado.edu.
If you'd like to report some bugs, please use the bug tracking utility on the sourceforge site at http://www.sourceforge.net/projects/peep That way we can fix your bugs for future releases.
Also, if you'd like to contribute to the maintenance of documentation, have suggestions or ideas, I recommend sending them through the mailing list or posted them in the public forms found on the Sourceforge page.
One last thing: if you're interested in writing/providing code, I do use a simple naming convention in the C code. That convention is as follows:
Variables: All lowercase, delimeted with '_'.
Ex: var_foo or var
Function Names: Start lowercase, Combined Words are punctuated with caps.
Ex: hello () or multipleWords ()
structs: Same as variables.
Ex: struct this_is_a_struct
typedefs: All caps for new types
Ex: typedef { } EVENT or EVENT thing