Popular Demand Packages -- MR #1

See merge request adelie/packages!269

user/iptables: new package

See merge request adelie/packages!266

There is some optional functionality available which requires further
libraries (libmnl for the ability to work over nf_tables as opposed to
the legacy ip{,6}_tables kernel module, libnetfilter_conntrack for
connlabel matching), but these libraries aren't yet packaged.

Perl (and vim) bugfix bumps for 5 July 2019

See merge request adelie/packages!268

user/wireguard-*: Bump to 0.0.20190702

See merge request adelie/packages!267

Pkgs on pkgs on pkgs.

* user/erl-rebar: a buildsys
* user/erl-rebar3: another buildsys
* user/perl-carp-clan: [carp clan](https://cdn.bulbagarden.net/upload/0/02/129Magikarp.png) stuff
* user/perl-bit-vector: are they bits? are they vectors? the world may never know
* user/perl-class-accessor: a thicc brother for perl-class-accessor-lite
* user/ruby-bundler: [gems stuff](https://www.youtube.com/watch?v=h-Z7ytsEZDo)

See merge request adelie/packages!265

Remove myself from "Maintainer" fields

See merge request adelie/packages!262