Fix image link.
Add potcar_type to vasprun.
Makr substitutions allow all Mapping types instead of just strictly dict.
Bug fix release.
fixed minor bug in StructureMatcher._get_supercell_size
fix the same bug in StructureMatcher.get_s2_like_s1
Merge remote-tracking branch 'mpmaster/master'
 Working on the treatment of deadlocks and automatic restart in the Scheduler.
 Restart was not working anymore due to the presence of the file lock.