New bulk tracker release

[Benny Siegert <bsiegert%gmail.com@localhost>]

Hi!

I just updated https://releng.netbsd.org/bulktracker/ to a new version.

Headline feature of this release is support for package maintainers! The 
maintainer of each package, as it was when the package was built, is now 
shown in most package data. This was contributed by a new contributor to 
the project, @acirep. Thank you!

Other changes

- The version is now shown at the bottom of each page.
- Various dependencies were updated. Some of them have security fixes, 
but AFAICT they do not concern this code.
- Debug logs are less noisy.
- Some instructions for getting started in the README file.
- Fix display of bulk-test-* table

NOTE: only new builds will have maintainer information. For an example, 
check out https://releng.netbsd.org/bulktracker/build/1921. At the time 
of writing this announcement, that's the only build with maintainer 
information.

--
Benny