Initial stab at printing refactor.
Made print_parameters more svelte.
Simplify more of printing.
Merge branch 'refactor-printing' of git://github.com/kaspth/icalendar into kaspth-refactor-printing

* 'refactor-printing' of git://github.com/kaspth/icalendar:
  Simplify more of printing.
  Made print_parameters more svelte.
  Initial stab at printing refactor.
Fixes multiple subcomponent join on printing
Properly remove double quotes form parameters

Fixes #39