Fix pip install with new pip version. Update ubuntu docker base image

Github issue 20 #20

Merge pull request #19 from vsiivola/update_docs

update docs

test macos-12 wheels and test more python versions

allow setuptools_scm>=7

improve pyproject.toml

Merge pull request #16 from vsiivola/fix_unigram_smoothing

Fix issue with no unigram smoothing, thanks to Shilin Gao.

Implement leave-one-out estimates for the discounts. If optimization …

…corpus is not set, use these estimates. Also, initialize numerical search for the parameters with these values. In the latter case, preliminary tests seem to indicate that better accuracy is reached than with the original heuristic search start point.

version 1.0.9, now under 3-clause BSD license

Minor bugfixes, bigram lookahead for interpolated LMs

Online linear interpolation.