Packaging cleanup

* Declare compliance with policy 4.6.2
* Bump debhelper compat level to 13
* Set Rule-Requires-Root: no
* Update debian/watch to version 4
* Complete patch description

debian/compat

@@ -1 +0,0 @@
-10

debian/control

@@ -1,13 +1,14 @@
 Source: u3-tool
 Maintainer: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
 Homepage: https://sourceforge.net/projects/u3-tool/
-Standards-Version: 3.9.8
+Standards-Version: 4.6.2
 Vcs-Browser: https://git.in-ulm.de/cbiedl/u3-tool
 Vcs-Git: https://git.in-ulm.de/cbiedl/u3-tool.git
-Build-Depends: debhelper (>= 10~),
+Build-Depends: debhelper-compat (= 13),
     libusb-dev,
     pkg-config,
 Priority: optional
+Rules-Requires-Root: no
 Section: utils
 
 Package: u3-tool

debian/patches/combined-r59.patch

@@ -1,5 +1,6 @@
 Subject: All upstream commits until r59 combined
 Author: Daviedev <daviedev@users.sourceforge.net>
+Forwarded: not-needed
 
 --- a/ChangeLog
 +++ b/ChangeLog

debian/watch

@@ -1,2 +1,2 @@
-version=3
-https://qa.debian.org/watch/sf.php/u3-tool/u3-tool-([\d\.]+)\.tar\.gz
+version=4
+https://qa.debian.org/watch/sf.php/@PACKAGE@/@PACKAGE@-([\d\.]+)\.tar\.gz