Change the metadata format to YAML

Change the metadata format to a single YAML file, with a slightly
different internal representation, whose default location is
docs/docknot.yaml.  The new docknot update command (or the
App::DocKnot::Update module) will convert from the old JSON format.
The new metadata format is checked against a schema when read.
DocKnot now depends on YAML::XS and Kwalify.

Word wrap numeric lists and, in Markdown output, quoted paragraphs.
Previously these preserved the original spacing from the input text
snippets.

Require paragraphs be indented by at least six spaces, not five, to be
treated as verbatim paragraphs and left unwrapped.  (Markdown
paragraphs can still use four spaces because they are wrapped in
markup lines.)

1 files changed, 2 insertions, 0 deletions

diff --git a/Build.PL b/Build.PL
index 6ca1e39..f0a8edd 100644
--- a/Build.PL
+++ b/Build.PL
@@ -69,9 +69,11 @@ my $build = Module::Build->new(
         'IPC::Run'            => 0,
         'IPC::System::Simple' => 0,
         'JSON::MaybeXS'       => 0,
+        'Kwalify'             => 0,
         'List::SomeUtils'     => 0,
         'Perl6::Slurp'        => 0,
         'Template'            => 0,
+        'YAML::XS'            => '0.81',
         perl                  => '5.024',
     },
     test_requires => {