Date of Catholic Easter

<ul><li>Updated to GNOME Platform 45</li></ul>

<ul><li>Updated to GNOME Platform 44</li></ul>

<ul><li>Port to GTK4 and libadwaita</li></ul>

<ul><li>Added Russian translation</li></ul>

<ul><li>Update to GNOME Platform 43</li></ul>

<ul><li>Update Hungarian translation</li><li>Update Dutch translation</li></ul>

<ul><li>Update Hungarian translation</li></ul>

<ul><li>Added Hungarian translation</li></ul>

<ul><li>Update Czech translation</li></ul>

<ul><li>Added Czech translation</li></ul>

<ul><li>Added Italian translation</li><li>Added Slovakian translation</li></ul>

<ul><li>Added Dutch translation</li></ul>

Calculate the date of Catholic Easter