Changes for version 0.30
- Implement feature request #78270 to include support say
- Preserve layers of passed hilehandle on instantiation.
- Fixed tests under Win32 & cygwin, bug #75181.
- Swap IO::Pager:new and ::open, alter subclass::open to remove unnecessary level of subroutine calls
- Return IO::Handle objects when not connected to a TTY for transparent use of IO::Pager when programming OO. NOTE: This is broken, see ::less in TODO