0.4.3

bugfix: max_structs is np.array in padding

What's Changed

• max_structs is np.array in padding
• add models.png into doc by @yury-lysogorskiy in #3
• upd docs/requirements.txt (add mkdocs-glightbox) by @yury-lysogorskiy in #4

Full Changelog: 0.4.2...0.4.3