Log Message:
Update p5-HTML-TagCloud to 0.37.

Changes from previous:
----------------------
0.37 Fri Jun 17 17:30:47 MST 2011
  - added a fix suggested by Juan Antonio Raygoza Garay
  - added some missing documentation
  - added a list of known contributors

0.36 Wed Feb 16 15:10:49 MST 2011
  - use different styles to distinguish adjacent tags.

0.35 Wed Feb 16 10:27:55 MST 2011
  - make tag URLs optional.