Added

• Add Constant definition.
• Add Data helper, Embedded text.
• Add Def helper.
• Add Logger helper.
• Add result modifier.
• Add Include helper.
• Add shorthand for function subject and variable subject.
• Add failed message for Before/After each hook.

Changed

• Change behavior of line and lines modifier to like "grep -c" not "wc -l".
• Change function subject to alias for value subject.
• Improve handling unexpected errors.
• Improve samples.

Removed

• Remove It statement and change It is alias of Example now.
• Remove Set / Unset helper.
• Remove Debug helper.
• Remove string subject.
• Remove exit status subject. (use status subject)