Avogadro 1.90.0

We are pleased to announce the release of Avogadro 1.90.0, our latest release as we finish up features for a final Avogadro 2.0 release. This release has a lot of new work completed over the last year, including the results of our first Google Summer of Code where two students worked on projects under the program. The binaries were build against Qt 5.7.0 (latest Qt at the time of release), an updated Open Babel, and using Visual Studio 2015 on Windows.