include all provided args, even if false
also test interaction with [ModuleBuild], [ModuleBuildTiny], [MakeMaker::Awesome]
insert the new content in the middle of the file, after the initial preamble, instead of right at the front

For this to work on [ModuleBuildTiny], we need a new release for
Leont/dist-zilla-plugin-modulebuildtiny #8
(https://github.com/Leont/dist-zilla-plugin-modulebuildtiny/pull/8)
add header to inserted code section
add a placeholder .mailmap
tighter entry
remove unnecessary plugin
shorter pod lists
better diagnostic output on failure
new CPAN::Meta requires license to be an arrayref
add irc channel and mailing list info to metadata
add some keywords to metadata
Devel::CheckLib 0.9 fixed uses of for qw(...)
also report on the versions of MB and MBT
provide config data for [MetaConfig]
whitespace
munge the file at the proper phase, if the file was created early enough