Apologies if this is not the correct way to submit non-bug related patches.
coolreader was flagged as out-of-date on 2020-10-28. I just built version 3.2.51 from an updated PKGBUILD and it runs fine. Below patch against the ABS package git tree (acquired via asp checkout coolreader) applies the update:
diff --git a/trunk/PKGBUILD b/trunk/PKGBUILD
index d9daae5..ca576e5 100644
--- a/trunk/PKGBUILD
+++ b/trunk/PKGBUILD
@@ -2,7 +2,7 @@
# Contributor: Ivan Naumeiko <Ivan.Naumeiko AT gmail DOT com>
pkgname=coolreader
-pkgver=3.2.49
+pkgver=3.2.51
pkgrel=1
pkgdesc="Fast and small XML/CSS based eBook reader"
arch=(x86_64)
@@ -12,7 +12,7 @@ depends=(hicolor-icon-theme qt5-base)
makedepends=(cmake qt5-tools)
source=(
https://github.com/buggins/coolreader/archive/cr$pkgver/$pkgname-$pkgver.tar.gz cr3.appdata.xml)
-sha256sums=('7354bfc78d1b2899dcb35ae73b19ab7a622bedc2d6a9d62831f249537590bfc6'
+sha256sums=('f5aca183855bcf4dc87b1764e15af3ba9dc5fdbe2e7c8b4c0f513b12f6b2a840'
'9d868cfd61b686b5a398797819367f16d7a65f1f5420441fb34c8d39236f7382')
prepare() {
I'm trying to monitor upstream a little more carefully, since I opened a couple of PRs with them.