Update Capture::Tiny from 0.25 to 0.27
Update Class::Singleton from 1.4 to 1.5
Update PadWalker from 1.98 to 1.99

Changes since 1.98:
Make it compatible with bleadperl. Patch from Father Chrysostomous at
https://rt.cpan.org/Public/Bug/Display.html?id=100262