The install_requires may need update

[imliuruiqi]

I noticed that install_requires specific version of networkx:
networkx==2.4
howerver networkx2.4 is not compatible with the latest numpy1.24.0 ,
which leads to an AttributeError: module 'numpy' has no attribute 'int' when trying to import SentenceAligner

Possible Fix
we better find a newer version of networkx, but we can also use lower numpy-1.23.4 as an workaround.

[LahiLuk]

I encountered the same numpy error.
Upgrading networkx to the new 3.0 release after installing simalign solves the issue, thus there is no need to downgrade numpy.