Interactive breakdown exploration and inline annotations

This is the third feature release of the Skyline CLI. This release changes the way the memory and iteration run time breakdowns are displayed and adds inline performance annotations to the code. This version of the CLI must be used with v0.3.0+ of the Skyline plugin.

The breakdowns are now displayed in a hierarchical way, based on the modules in the model. Double clicking on an entry will "zoom in" on the entry and show a breakdown of the operations within that module.

Skyline now also shows performance annotations inline. A marker will appear in the gutter for lines of code for which we have performance information. Hovering over these markers will show the contribution of the line of code to the overall memory footprint and iteration run time.