Add Path#resolve(String) and Path#relativize(String) for convenience

syntactic-paths/src/main/java/uschi2000/paths/Path.java

@@ -142,6 +142,11 @@ public Path resolve(Path other) {
         }
     }
 
+    /** Equivalent to {@code resolve(new Path(other)}. */
+    public Path resolve(String other) {
+        return resolve(new Path(other));
+    }
+
     /**
      * Returns the suffix of the given path as seen relative from this path: If the given paths or of the same type
      * (i.e., relative/absolute) and if the segments of this path are a prefix of the segments of the other path, then
@@ -166,6 +171,11 @@ public Path relativize(Path other) {
         return new Path(other.segments.subList(this.size, other.size), false);
     }
 
+    /** Equivalent to {@code relativize(new Path(other)}. */
+    public Path relativize(String other) {
+        return relativize(new Path(other));
+    }
+
     /**
      * Returns true iff the segments of the given other path are a prefix (including equality) of the segments of this
      * path, unless this path is relative and the other path is absolute. For example, {@code /a/b/c} starts with {@code

syntactic-paths/src/test/java/uschi2000/paths/PathTest.java

@@ -77,6 +77,8 @@ public void testRelativize() {
         assertThat(new Path("/a/b/c").relativize(new Path("/a/b/c/d/e/f")), is(new Path("d/e/f")));
         assertThat(new Path("a/b/c").relativize(new Path("a/b/c/d/e/f")), is(new Path("d/e/f")));
         assertThat(new Path("a/b/c").relativize(new Path("a/b/c")), is(new Path("")));
+
+        assertThat(new Path("/a/b/c").relativize("/a/b/c/d/e/f"), is(new Path("d/e/f")));
     }
 
     @Test
@@ -116,6 +118,8 @@ public void testResolve() {
         assertThat(new Path("/a").resolve(new Path("/b")), is(new Path("/b")));
         assertThat(new Path("/a/b").resolve(new Path("/c/d")), is(new Path("/c/d")));
         assertThat(new Path("a").resolve(new Path("b")), is(new Path("a/b")));
+
+        assertThat(new Path("/a/b").resolve("/c/d"), is(new Path("/c/d")));
     }
 
     @Test