GCD Parser

This is a parser and some tools for working with GCD files (firmware updates from a well-known manufacturer).

It's in Python, so feel free to add cool new features and submit pull requests.

Thanks to TurboCCC, kunix and Alex W. for your work.

Most info from:

• http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=115804&whichpage=1
• http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=137838&whichpage=50
• hours of looking at hex numbers