v1.6.1

This is a minor bug-fix release
Bug fixes

• Functions with Dynamic parameters now work in qualified calls from imported modules.
• rhai-repl now compiles with the new patch version of rustyline.
• rhai_codegen dependency is now explicitly 1.4 or higher.

Script-breaking changes

• split now splits a string by whitespaces instead of splitting it into individual characters. This is more in line with common practices.
• A new function to_chars for strings is added to split the string into individual characters.

Enhancements

• Strings are now directly iterable (via for .. in) yielding individual characters.