Summary: New upstream version merged from debian unstable.
Test Plan: Test if it builds alright in all architectures.
Reviewers: rikmills, wxl
Differential Revision: https://phab.lubuntu.me/D106
* Bumped Standards to 4.3.0, no changes needed
* Dropped d/compat, use debhelper-compat = 12, no changes needed
* Fixed years in d/copyright
* Bumped minimum version lxqt-build-tools (>= 0.6.0~)
* Removed obsolete PULL_TRANSLATIONS= OFF from dh_auto_configure
* Added l10n-package, moved from lxqt-l10n
* Added d/upstream/metadata
* Synced debian/foo with experimental
* Bumped Standards to 3.9.8, no changes needed
* Bumped compat to 10
* Removed --parallel from rules, standard in compat 10
* Bumped build dependency debhelper (>= 10)
* Bumped build dependency liblxqt-dev (>= 0.11.0)
* Bumped build dependency libqtxdg-dev (>= 2.0.0)
* Added build dependency libkf5windowsystem-dev
* Added build dependency libqt5svg5-dev
* Added Recommends obconf-qt-l10n
* Fixed VCS fields, using plain /git/
* Used GPL-2+ for debian, no need to introduce a second license
* Fixed copyrights Format field to https
* Dropped patches, applied upstream
* Added translation control to rules
* Set CMAKE_BUILD_TYPE=RelWithDebInfo
* Exported LC_ALL=C.UTF-8, make builds reproducible
* Cleaned up source/options and .gitignore
