Trying to fix distance to hull calculation problem but didn't manage.
Accidentally left debugging messages on in hull.
Fixed typo in error message.
Fixed bug with hull when using a binary composition where no points (except endpoints) lie on the hull.
Merging bugfix from hull debugging branch.
Fixed bug with 1D hulls where certain structures would be missed.  Made drawing of labels default in shull.
Taking latest fixes for convex hulls.
Fixed problem with pressure being written twice by castep geom optimiser.
Fixed problem with non single species endpoints in convex hull.
Merged bugfix for convex hulls and atom formulas.
Fixed bug from last commit.
Fix to fix the last fix.
Fixed bug with atom formulas and change gnuplot hull plotter to use list of endpoints as output filename.
Made smeasure print speces next to atom index when showing pair distances.
Fixed bug in smeasure
Fixed another bug in smeasure.
Speed improvement to generating convex hulls.  Especially 3D and up.
Bug fix for last commit.  Off hull points werent being included properly.
Changed label to enthalpy instead of energy.
Fixed bug in convex hull when specifying custom endpoints.