Format Perl6 code.
Known limitations: if there is a BEGIN, there will not be any formatting.
Also, if classes are imported from nqp.
Usage
use Rakudo::Perl6::Format;
my $f = Rakudo::Perl6::Format.new(); # create a new object
say $f.format({indentsize=>4},$content); # format using indentsize 4.
Only identation size can be set now.
Command line access:
$ perl6 format.p6 -h
$ perl6 format.p6 -is 4 \<Dagrammar.p6 \>formatted.p6