fix for lifetime/borrow: ambiguous type error
Close #148
  - Added the explicit type declaration for `stack_integer`
  - re-aligned lifetime lines for readability
  - Tested successfully on the live site to verify that it works
Fix more int/float fallback removal errors
Merge pull request #149 from tjkierzkowski/issue_148

fix for lifetime/borrow: ambiguous type error
Clarify move/copy terminology. Closes #133