IMP 2.6.0 release

This is a bugfix and minor update release. Most notably we include most of the functionality of PMI2. This is an improved version of PMI that is faster than PMI1, more modular, and easier to use. See IMP::pmi for more information. This release also includes a number of bug fixes, most notably in the creation of sampled electron microscopy density maps.

See the full change log for more details.

Pre-built binary packages for Linux, Windows and Mac are available at the IMP website. IMP can also be installed using Homebrew or Anaconda Python; install instructions are at the same location.