To download version 0.9.0, click here. Version 0.9.0 is the first release and was released on 2 December 2015.
The source code of NppTags can be found at GitHub.
To manually install the plug-in, copy
NppTags.dll to the
plugins directory. There you need to create a directory
NppTags and copy
ctags.exe to that directory. Then (re)start Notepad++.
The documentation of NppTags can be found at Read the Docs. This includes: