Synchronize versions

CHANGELOG.md

+## 0.1.1
+
+- All features implemented
+- Remove old_perl/ directory
+
 ## 0.1.0
 
 - Initial version in Dart

lib/help.dart

 void help() {
-  String help = """scpm v0.0.2
+  String help = """scpm v0.1.1
   Syntax: scpm [-346ABCpqrTv] [-d|--dry-run] [-c cipher] [-F ssh_config] [-i identity_file] [-J destination] [-l limit] [-o ssh_option] [-P port] [-S program] source target
   """;