v1.5.0

This release increments the minimum supported PHP version to 7.1.0.

Also, HHVM official support has been dropped.

Some noticeable performance improvements to annotation autoloading
have been applied, making failed annotation autoloading less heavy
on the filesystem access.

Total issues resolved: 4

• 133: Add @throws annotation in AnnotationReader#__construct() thanks to @SenseException
• 134: Require PHP 7.1, drop HHVM support thanks to @lcobucci
• 135: Prevent the same loader from being registered twice thanks to @jrjohnson
• 137: #135 optimise multiple class load attempts in AnnotationRegistry thanks to @Ocramius