Update debian version to '4.18.1-1'

Author: zsien

debian/changelog

@@ -1,3 +1,9 @@
+i3-gaps (4.18.1-1) unstable; urgency=medium
+
+  * release i3-gaps 4.18.1
+
+ -- Zhihsian Que <[email protected]>  Sun, 7 Jun 2020 20:30:02 +0800
+
 i3-gaps (4.17.1-1) unstable; urgency=medium
 
   * Initial release

debian/watch

@@ -1,5 +1,5 @@
 version=4
 
-opts="filenamemangle=s%(?:.*?)?v?(\d[\d.]*)\.tar\.gz%i3-$1.tar.bz2%" \
+opts="filenamemangle=s%(?:.*?)?v?(\d[\d.]*)\.tar\.bz2%i3-$1.tar.bz2%" \
    https://github.com/Airblader/i3/releases \
    (?:.*?)?v?(\d[\d.]*)\.tar\.bz2 debian uupdate