Most of the code here is licensed under the LGPL.  There are exceptions that
have their own licenses, listed below.  See comments in those files for more
details.

src/libime/kenlm see src/libime/kenlm/LICENSE
src/libime/datrie.* is a modified version based on
cedar <www.tkl.iis.u-tokyo.ac.jp/~ynaga/cedar/>.
