Add breaking changes and release 1.0.0.

lib/src/line_scanner.dart

Index: lib/src/line_scanner.dart
diff --git a/lib/src/line_scanner.dart b/lib/src/line_scanner.dart
index fe6359212c303d6900050f3c9db1ec5dfc84d66a..06f1cbc1e0a64f0e1efaa5470a150b8f47481857 100644
--- a/lib/src/line_scanner.dart
+++ b/lib/src/line_scanner.dart
@@ -26,6 +26,8 @@ class LineScanner extends StringScanner {
   /// This can be used to efficiently save and restore the state of the scanner
   /// when backtracking. A given [LineScannerState] is only valid for the
   /// [LineScanner] that created it.
+  ///
+  /// This does not include the scanner's match information.
   LineScannerState get state =>
       new LineScannerState._(this, position, line, column);