gplugin/gplugin

Prepare for the 0.35.0 release
v0.35.0
2021-09-30, Gary Kramlich
82687b8b1f97
Prepare for the 0.35.0 release

Testing Done:
Ran `ninja dist`

Reviewed at https://reviews.imfreedom.org/r/964/
EionRobb <> EionRobb <eion@robbmob.com>
ivanhoe <107501-ivanhoe@users.noreply.gitlab.com> ivanhoe <ivanhoe@fiscari.de>
Richard Laager <rlaager@pidgin.im> <rlaager@wiktel.com>