- Added a layout file & template for LyX users! (Thanks for the suggestion Felipe Roman!)

  - To install, simply copy the .layout file to the layouts/
  folder under your local LyX installation, invoke LyX and run
  Tools>Reconfigure. Note that the pucrs-ppgcc.cls file must be
  found by LyX, so be sure to place it in a searchable location in
  your Home folder (under Linux, you can set the TEXMFHOME
  environment variable and run 'texhash $TEXMFHOME')

- Changed default font (including math) to Helvetica for a much improved look!
  - Be aware that this font is slightly bigger than the old one
  though. To change back to the old one, simply uncomment the
  lines containing 'lmodern' in the .cls file and remove the
  lines containing 'helvet'

- Several fixes & improvements to the .cls file!