fixed cut down situation. Balloon does not cut down within the first two minutes of launch. no further testing attempted. broadcast function modified to save checksum to sd card. No hardware testing implemented at this time.
updated checkDistance in Data.h to reflect changes in return type
removed bad logic from balloon cut down system. removed serial write/prints from sd card saving function
Slapped a quick fix on the readGPS function. This should keep it from timing out.
Quick delay to turn the nicrome wire off. we loose 40s of data, but garauntee that the wire does what we want it to. The 'correct' method of programming this with two parameters (&&) timed out after only two minutes.
Stored checksum to SD card with data.

$ <data> * <checksum>
libraries that appeared around the time AltSerial was instituted.