Fixes #114 - Fix snapToLines assertion, wrap lines, safety checks

- assert errorCount == 1 to prevent bad-access
- assert snapToLines == true rather than false
- use assertEquals function rather than 3 assert statements, to make
  test smaller
- wrap lines to 80 columns
Fixes #114 - Removed references to `err`, correct assertions/comments
Merge pull request #114 from caitp/issue-114

CueSettingLine.BadDelimiter incorrectly ASSERT_FALSE(snapToLines())