Experimental

Couldn't quite understand what you meant here. I left the tokenizer currently untouched besides that change (loading prefixes from file rather than code). I wrote this in the last commit - the tokenizer does not use a the dictionary itself, just the prefixes, so I left this untouched. We can easily modify the Tokenizer to either receive a DictHebMorph or just the map from that, I just didn't want to make such changes for now.
I don't understand the need to make HebLoader non-static. We don't necessarily want a copy of the HebLoader, we just want a copy of the DictHebMorph which should include everything we need.