Make external API of class/module to be smaller, explicitely mark
all internal functions. Also annotate methods that are implemented
as the part of the parent class interface.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
Add one test for each of the functions in offlineimap.imaputil, to make
sure they keep working. These functions tests the internal innards of
the offlineimap module rather than invoking offlineimap as a program.
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
