A lot of things.

- Change tests directory location.
- Fix Merlu CSV UTF8 encoding.
- Make classes for ParasitesPeru2021.csv Parsing.

src/ecoparasite/population/Population.java

@@ -0,0 +1,50 @@
+    package ecoparasite.population;
+
+    import java.util.HashMap;
+    import java.util.HashSet;
+
+    public class Population {
+
+        private String id;
+        private PopulationArgs total;
+        private HashMap<Integer,PopulationArgs> perYear;
+
+        public Population(String id, PopulationArgs total, HashMap<Integer,PopulationArgs> perYear) {
+            this.id = id;
+            this.total = total;
+            this.perYear = perYear;
+        }
+
+        public Population(String id, PopulationArgs total) {
+            this.id = id;
+            this.total = total;
+            this.perYear = new HashMap<>();
+        }
+
+        public Population(String id) {
+            this.id = id;
+            this.total = null;
+            this.perYear = new HashMap<>();
+        }
+
+        public String getId() {
+            return id;
+        }
+
+        public PopulationArgs getTotal() {
+            return total;
+        }
+
+        public HashMap<Integer,PopulationArgs> getPerYear() {
+            return perYear;
+        }
+
+        public void setTotal(PopulationArgs total) {
+            this.total = total;
+        }
+
+        public void setPerYear(HashMap<Integer,PopulationArgs> perYear) {
+            this.perYear = perYear;
+        }
+
+    }