Fixing one last incidence of Training that should now be listed as Proficient
Fixes #44 - Updated wielded drop down values and the calculation that uses it
Added sorcerer and warlock to class level and hit dice section.  Moved bard to d8 hit dice based on PHB previews
Added functionality for a NPC sheet, moved last updated date to the sheet header
Rework of core stats section to create more space for death save area
Added death save tracking to core stats section and reworked layout slightly to accommodate it
Added support for some custom skills/tolls usage in the skills section
Added option for unit weights in the inventory section
Dating changelog
Merge pull request #392 from Actoba/master

5e sheet bugfixes, PHB release prep, and minor features