Bump snapshot version.
Update README changes from master.
Add initial encryption implementation.
Add initial decryption support.
Add deftags macro and additional tag types.
Exercise encryption with basic test.
PGP decryption refactoring.
Fix encryption and decryption code.
Add README section on encryption.
Fix README typo.
Set release version 0.5.0
Merge branch 'release-0.5.0'

Conflicts:
	README.md
	project.clj