Update to 2.08. From the changelog:

- replaced html entities in russian.html (read by utf8 test), as the
  test should not fail due to problems with HTML::Entities.

- improvements for Kwalitee

- strip_spaces in utf8 test was using perl v5.14+ features
- reading of DATA in utf8 test should be native utf8 not use Encode,
  which mangles it on some platforms

- fix to bug in t/300_utf8.t causing whitespace not to be stripped

- many cpan tester failures due to witespace in utf8 test,
  main test done with whitespace stripped, todo test as before

- removed trailing libicu deps
- perl minimum version to 5.8 (needed for unicode support).
- cleaned up test suite
- version bump in META.YML (RT#100457)
- 'use feature' breaking perl 5.8, removed (RT#100453)
- added Test::Exception to build_requires

- removed dependency on libicu-dev, which isn't as universal as expected
  and was causing a bunch of cpan tester failures

(schmonz)