Fixed empty space being added for the first day of the heatmap if its also first day of the month

src/heatmap.rs

@@ -55,15 +55,20 @@ impl Heatmap {
 			}
 		}
 
+		// Track the very first day of the heatmap, as we don't want the extra spacing in front of
+		// those.
+		let mut first_day = true;
+
 		while current_day <= until {
 			if split_months {
-				// If current day is the first of the month we add 2 weeks worth of empty space so
-				// months are more visible
-				if current_day.day0() == 0 {
+				// If current day is the first of the month, but not the first day of the heatmap
+				// we add 2 weeks worth of empty space so months are more visible
+				if !first_day && current_day.day0() == 0 {
 					for i in 0..14 {
 						heatmap.data[(i as usize) % 7].push(-1);
 					}
 				}
+				first_day = false;
 			}
 
 			let month_name = current_day.format("%b").to_string();