We use for now an initial translation into Haskell of
this Javascript implementation:

https://github.com/words/lancaster-stemmer/blob/main/index.js

More tests needed

Test failed, not merging.

This reverts commit 2e77bfa5, reversing
changes made to fe201115.

This commit switch the PhyloMaker.hs code to use, whenever we can,
faster implementations for nub and sort.

It also adds a semi-interesting phylo.

This reverts commit a60a1be7.

Split into Extract/Types/Utils modules.

Found some functions that are unused.

When user searched for a phrase with space inside, in database, the
'to_tsquery' function raised an sql error. One should use
'plainto_tsquery'. Also, a proper test was added.