The pygments highlighter does not recognize `==begin` and `==end`
without a newline before `==end`. For this reason it will never end the
comment. This resulted in 95% of the Raku document being highlighted as
a comment.
We replace most `=begin` and `=end` with standard quotes `#`. In some
places I retain `=begin` and `=end` when they are indented (this works
fine in pygments).
+ As the Perl 6 is renamed to raku, it is good to reflect that https://github.com/Raku/problem-solving/blob/master/solutions/language/Path-to-Raku.md
+ perl6.org is now raku.org
+ change references of perl 6 to raku
+ rename file perl6-pod.html.markdown to raku-pod.html.markdown
+ Perl refers to Perl 5, there is no ambiguity after rename of Perl6 to
Raku, use Perl only to refer to Perl 5
+ fix links inside raku.html.markdown
- Replace mentions of Perl 6 with Raku
(See https://github.com/perl6/problem-solving/blob/master/solutions/language/Path-to-Raku.md)
- Document's sections is now part of the resulting raku file
- The resulting Raku file can now be executed without runtime/compile-time
errors
- Some examples had minor updates or fixes
- Update links, extensions and commands.