Merge branch 'release/2.0.0'

.gitlab-ci.yml

.pkglts/pkg_cfg.json

.pkglts/pkg_hash.json

conda_recipe/conda_build_config.yaml

conda_recipe/meta.yaml

doc/conf.py

example/labeled_tree_edit_distance.py

setup.py

src/__init__.py

src/treex/__init__.py

src/treex/analysis/__init__.py

src/treex/analysis/edit_distance/__init__.py

src/treex/analysis/edit_distance/add_del_leaf.py

src/treex/analysis/edit_distance/incremental_zhang.py

src/treex/analysis/edit_distance/zhang_dag.py

src/treex/analysis/edit_distance/zhang_labeled_trees.py

src/treex/analysis/hidden_markov.py

src/treex/analysis/spinal_galton_watson/__init__.py

src/treex/analysis/spinal_galton_watson/divergence.py

src/treex/analysis/spinal_galton_watson/identification.py