Merge pull request #10 from run4flat/master

Provide better defaults for Prima::HelpViewer
- modernize WM interface: related to but #90269, rely on WMs to

properly interpret manipulations with NET_WM_ hints using sendmessage.
This removes some hacks needed in the past.
- warn and return image(1,1) if extract() receives bad image dimensions
- remove annoying 'rtcXXX' from warn/croak messages
- better algorithm for centering windows in multi-monitor setup
- s/HISTORY/Changes/
- v1.38
- hide two-letter packages from CPAN indexer
- add rubberband example
make formatter tolerant to "line containing nothing but whitespace" warnings in PODs
- make head3 and head4 full memmbers of menu, same as head1 and head2
- nicer printing with margins and page numbers
- typo fix that sometimes caused coredumps and sometimes sligntly incorrect palette on optimized downsampling
- fixes for strawberry 5.20 by kmx - thank you!
- make selection of pitch(fpVariable) heavier than name within same font family
- typo fix
explain cm_study_palette incomments; also retab
- add proper package paths Prima:: and Prima::VB:: where missing

(this confuses CPAN pod indexer)
- fix coredump when x server haven't got RANDR
- show less debug