Cleaned-up dependencies, tested material-docs v8

requirements.txt

@@ -1,25 +1,4 @@
-click>=7.1.2,<8.0
-future>=0.18.2,<1.0
-Jinja2>=2.11.2,<3.0
-joblib>=0.16.0,<1.0
-livereload>=2.6.3,<3.0
-lunr>=0.5.8,<1.0
-Markdown>=3.2.2,<4.0
-MarkupSafe>=1.1.1,<2.0
-mkdocs>=1.1.2,<2.0
-mkdocs-macros-plugin>=0.4.9,<1.0
-mkdocs-material>=7.1,<8.0
-mkdocs-material-extensions>=1.0,<2.0
-mkdocs-git-revision-date-localized-plugin==0.9.2
-mkdocs-simple-hooks==0.1.3
-nltk>=3.5,<4.0
-Pygments>=2.7.1,<3.0
-pymdown-extensions>=8.0,<9.0
-python-dateutil>=2.8.1,<3.0
-PyYAML>=5.3.1,<6.0
-regex>=2020.7.14,<2021.0
-repackage>=0.7.3,<1.0
-six>=1.15.0,<2.0
-termcolor>=1.1.0,<2.0
-tornado>=6.0.4,<7.0
-tqdm>=4.49.0,<5.0
+mkdocs-macros-plugin>=0.6,<1.0
+mkdocs-material>=8.2,<9.0
+mkdocs-git-revision-date-localized-plugin>=1.0,<2.0
+mkdocs-simple-hooks>=0.1,<1.0