Fixes #113 - Correctly assert snapToLines == TRUE, wrap whitespace

- ASSERT_FALSE -> ASSERT_TRUE for snapToLines()
- assert errorCount == 1 before checking error conditions
- use error condition assertEquals helper to shrink code
- wrap lines to 80 columns
Merge pull request #113 from caitp/issue-113

CueSettingLine.NoDelimiter incorrectly ASSERT_FALSE(snapToLines()), bad error