Prefixing ivars with underscore as per Apple recommendations.
Implementing property “dumpToFile”.
Converting enum to NS_ENUM.
Fixing typos.
Explicitly setting indentation to spaces.
Fixing leak.
Adding group name as ID.
Cleanup.
Deduplicating SQLCanvasArea class name.
Merge pull request #1 from JanX2/master

Cleanup, improvements, fixes - merged from JanX2/master