<bugfix>Change analogies to use a suitable default alpha value</bugfix> <ticket>#419</ticket>
<bugfix>Change analogies to use a suitable default alpha value</bugfix>
<ticket>#419</ticket>

The implementation of analogies was switched to use an alpha value that was the additive inverse of the original.  This has been changed back, and the terminator example should now work as expected.

core/analogy/__init__.py:
  - perform_analogy_on_vistrail: default alpha to 0.15

hjanime/VisTrails,VisTrails/VisTrails,minesense/VisTrails,VisTrails/VisTrails,celiafish/VisTrails,VisTrails/VisTrails,celiafish/VisTrails,hjanime/VisTrails,Nikea/VisTrails,Nikea/VisTrails,minesense/VisTrails,hjanime/VisTrails,celiafish/VisTrails,VisTrails/VisTrails,Nikea/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,Nikea/VisTrails,celiafish/VisTrails,minesense/VisTrails,minesense/VisTrails,minesense/VisTrails,hjanime/VisTrails