7.1.1: PHP 7.1 compatibility fix

• Fixed forward compatibility with PHP 7.1. It was really only unittests
  failing though; see https://bugs.php.net/bug.php?id=73217
  (@thekid)

7.1.0: XP8 compatibility

• Added version compatibility with XP 8 - @thekid

7.0.1: Fix module.xp handling

• Fixed module.xp being treated as class with XP language - @thekid

7.0.0: XP7 compatibility

• Added version compatibility with XP 7 - @thekid

6.0.1: Rebasing fix

• Adjusted test code after xp-framework/rfc#297 was implemented
  (@thekid)

6.0.0: XP7 forward compatibility

• Adopted semantic versioning. See xp-framework/rfc#300 - @thekid
• Implemented "compile" subcommand for new xp-framework/rfc#303 runners
  (@thekid)
• Heads up: Removed support for extension methods at runtime. They no
  longer exist in XP7 as per xp-framework/rfc#298
  (@thekid)
• Fix code to use nameof() instead of the deprecated getClassName()
  method from lang.Generic. See xp-framework/core#120
  (@thekid)

5.0.1: Remove ensure

• Replaced deprecated ensure() with a finally statement, creating forward
  compatibility with XP 6.9.0. See xp-framework/core#111
  (@thekid)

5.0.0: Enter PHP 5.5

• Heads up: Changed minimum XP version to run the XP compiler to XP
  6.5.0, and with it the minimum PHP version to PHP 5.5
  (@thekid)

4.1.0: Type normalization

• Normalized types when checking for extension methods so all variants
  of api doc @param tags, parameter type syntax and dotted as well as
  PHP fully qualified and unqualified parameter names work.
  (@thekid)

4.0.1: Forward compatiblity fixes

• Rewrote code to use literal() instead of xp::reflect(). See
  xp-framework/rfc#298
  (@thekid)