Alpha release 2 (using in cutting EEG 2018)

In this version the local circuit connectivity for ERP and alpha/beta simulations (described in tutorials on hnn.brown.edu) were adjusted to match the Jones 2009 model. Note that the gamma model is based on Lee & Jones 2013, which uses a different network architecture.

This version will be used at the HNN workshop at cutting EEG 2018. If any installation issues arise (systems there use Debian), will make adjustments to Linux installer.