chore: 1.5.0

KDE's own middle-click paste is turned off along with everything else. Inside a
Chromium application the flag already settles it - with autoscroll on, Blink
stops pasting the primary selection - but everywhere else on the desktop middle
click goes on pasting, which is the thing this program exists to get away from.

KWin has a switch for it on a Wayland session, where the paste is a protocol
the compositor either offers or does not, and that is what gets written. It is
true from the next login on. What the key said before is recorded, so disable
puts it back, and a key that already said no is left alone and never switched
back on. X11 has no such switch and nothing is written there.

Off under Settings for anyone who wants the paste kept.

Makefile

@@ -8,7 +8,7 @@
 # Overridable so a packager can pass the version it is actually building
 # (`make VERSION=$pkgver`). The literal below is the fallback for builds
 # straight from a checkout, and is what a release tag has to carry.
-VERSION      ?= 1.4.0
+VERSION      ?= 1.5.0
 
 PREFIX       ?= /usr
 DESTDIR      ?=