In progress

Working to add functionality to use personal key or default key, as
desired.
Nothing broken!

Working enough that original function works. Init sequence seems
correct. Need to write (personal-key->base-key)
Now encrypts on personal key!

Can switch back and forth; behaves correctly!
Cleaning for merge to master

Personal key and init sequence cleaned up. Tested and ready to merge
back to master
Merge pull request #4 from Gandalf-/PersonalKey

Merging personal key branch to master.