Stabilization and Enhanced Email Generation

New and Enhanced Features

• Generating email addresses
  has now configuration options.

• Generated email addresses now
  have fewer edge cases.

• Added constraint annotation
  @Email
  for generating valid email addresses.

• Experimental support for
  changing an arbitrary's edge cases.

• Constraint annotation @StringLength now works for any arbitrary that generates a String.

• Range annotations (@Byte|Short|Int|Long|Float|Double|BigRange) do work now when applied
  to any arbitrary that generates the appropriate numeric type.

Breaking Changes

• Email arbitrary no longer generates domain hosts without top level domain

Bug Fixes

• Reporting of null values in failed properties
  no longer fails with NPE.

• Sampling arbitraries with null values
  no longer fails.