load tables on put(). ModelBase: moved numerical identifier to index; new auto-generated CompositeKey (key) column (still not perfect); error handling in id().
load tables on put(). ModelBase: moved numerical identifier to index; new auto-generated CompositeKey (key) column (still not perfect); error handling in id().

bubbleboy14/cantools,bubbleboy14/cantools,bubbleboy14/cantools,bubbleboy14/cantools