Verse 1.2.0: Types and Tests

Verse now provides a helpful error message if you pass the wrong arguments to a function. A few improvements to the test framework are also included in this release.

• Anonymous function values are now represented as <function> in error messages etc. (previously, nothing was displayed for these values)
• Tests that use simulate now work correctly for programs that use state/reducers
• If the program crashes within a simulator test, the error that caused the crash is displayed.
• Callingyield perform(...) now returns the current state