New release checklist

update Mudlet/mudlet-lua with latest from vadi2/mudlet-lua (https://github.com/Mudlet/Mudlet/pull/399)
ensure all new functionality is documented
1. ☑ documented geyser flyout labels
☑ update http://www.mudlet.org/geyser/files/index.html
update built-in packages and scripts
tag in git
go through every single commit and write up a newspost with the latest highlights
1. check wiki documentation while doing this to ensure everything is documented
2. document if not
make windows installer
1. sign windows installer
make macos installer
make linux installer
update Ubuntu PPA
regenerate geyser docs
post news on mudlet.org
post thread on forums.mudlet.org
post update on achaea, lusternia, imperian, dsl-mud.org forums (any others?)
post update on twitter
post update on facebook
update Linux distro maintainers
update 'fix commited' bugs on https://bugs.launchpad.net/mudlet

Post 3.0 checklist

merge release_30 into development and remove the branch (see https://github.com/Mudlet/Mudlet/pull/367 for some discussion)
migrate the project from launchpad.net to github.com (help wanted)
upgrade mudlet.org linode image (help wanted)
add vadi2/mudlet-lua as a submodule to main tree
merge release_31 into development and remove the branch
apply clang-format to all files
enforce clang-format on commit & pr acceptance
in general, 4.0 is about i18n support - but as always, feel free to work on whatever interests you