Ignore empty lines or comments in vacation point file.

src/main/java/net/themusicinnoise/vaccalc/PointEngine.java

@@ -82,6 +82,9 @@ public class PointEngine {
         try (BufferedReader br = new BufferedReader(new FileReader(pointsFile))) {
             String line;
             while ((line = br.readLine()) != null) {
+                if (line.isEmpty() || line.charAt(0) == '#')
+                    continue;
+
                 Matcher defaultMatcher = defaultPattern.matcher(line);
                 if (defaultMatcher.find()) {
                     defaultPoints = Double.parseDouble(defaultMatcher.group(1));

vac-points.txt

@@ -4,6 +4,8 @@ m=Jul 0.825
 m=Aug 0.825
 2026-12-24 0.5
 2026-12-31 0.5
+
+# Weekends & Holidays
 dow=Sun 0.0
 dow=Sat 0.0
 2026-01-01 0.0