Dropping maintainership on my ports

I currently lack time and motivation to take care of the ports I
maintain and returned them to the pool. Feel free to grab them if
you're interested:

audio/atunes
audio/osdmixer
audio/volumeicon
deskutils/gsimplecal
devel/astyle
devel/cmunge
devel/glrparser
games/bass
games/fotaq
games/xpilot
math/aribas
misc/tvbrowser
multimedia/mpeg_play
multimedia/mpeg_stat
multimedia/pwcbsd
net-mgmt/aircrack-ng
net-mgmt/icinga2
net-mgmt/icingaweb2
net-mgmt/icingaweb2-module-businessprocess
net-mgmt/icingaweb2-module-cube
net-mgmt/icingaweb2-module-director
net-mgmt/icingaweb2-module-elasticsearch
net-mgmt/icingaweb2-module-fileshipper
net-mgmt/icingaweb2-module-generictts
net-mgmt/icingaweb2-module-grafana
net-mgmt/icingaweb2-module-graphite
net-mgmt/icingaweb2-module-idoreports
net-mgmt/icingaweb2-module-ipl
net-mgmt/icingaweb2-module-map
net-mgmt/icingaweb2-module-pdfexport
net-mgmt/icingaweb2-module-reactbundle
net-mgmt/icingaweb2-module-reporting
net-mgmt/icingaweb2-module-vsphere
net-mgmt/pnp
net-mgmt/pnp-icinga2
net/cnd
security/fcheck
sysutils/chyves
sysutils/iohyve
textproc/qrcodegen
www/dhttpd
www/swiggle
x11-fm/mucommander
x11/bbrun
x11/mrxvt-devel

Some of them need a bump to their latest upstream version, e.g.
net-mgmt/icinga{,web}2.

Lars