Alternative to ngram tokenizer and token filter. Substring issue

[nik9000 (Nik Everett)]

@lantern77

2. the wild card search is unfortunately too slow, especially for sub-strings that appear often in searches and searches that begin with the * itself.

Reverse edgeNGram on the analyze side and prefix queries on the search side offers a decent tradeoff I think. I expect the space usage to be much, much, much better than ngrams and the performance to be significantly better than wildcard search.