Updated plugins, also experimenting with a new font

The font is IBM Plex Mono: https://ibm.github.io/type/

sources_non_forked/vim-go/gosnippets/UltiSnips/go.snippets

@@ -110,7 +110,7 @@ snippet gpl
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
-* Copyright (C) ${1:Author}, `strftime("%Y")`
+* Copyright (C) ${1:Author}, `!v strftime("%Y")`
 */
 ${0}
 endsnippet