relax SVN archive

Split the write() function in half.

The two new functions are write() and write_body(). The write() function calls write_body(). This
write_body() is designed to be used by the display() function.

Updated the docstring of the write() function.

Removal of debugging code from the write() function and an update to the md5sum in its unit test.

Final fix for the unit test for writing an amino acid sequence.

The md5sum has been added to the test.

Big improvements to the write() function.

And another fix for the unit test for writing an amino acid sequence.

Another fix for the unit test for writing an amino acid sequence.

A fix for the write() function.

Fix for the unit test for writing an amino acid sequence.

Added the missing import of the spin_loop() function.