fixed #544
updated readme
more safety checks for listener counts
Single character README fix waste of time pull request.
fixed #651
Merge pull request #746 from SamWhited/development

Single character README fix waste of time pull request.
close cursors after querying phone db
Merge branch 'development' of https://github.com/siacs/Conversations into development
fixed digest-md5
Update logo in art folder
Merge pull request #752 from SamWhited/update-logo

Update logo in art folder
possible work around for some weird - possibly sdk - bugs
version bump to 0.9.3