Feat(cli): Finished all functionalities

- passed all tests

tests/cli.rs

@@ -19,7 +19,7 @@ fn usage() -> TestResult {
         Command::cargo_bin(PRG)?
             .arg(flag)
             .assert()
-            .stdout(predicate::str::contains("USAGE"));
+            .stdout(predicate::str::contains("Usage"));
     }
     Ok(())
 }

tests/expected/all.b.out

@@ -1,13 +1,13 @@
      1	The quick brown fox jumps over the lazy dog.
-     1	Don't worry, spiders,
-     2	I keep house
-     3	casually.
-     1	The bustle in a house
-     2	The morning after death
-     3	Is solemnest of industries
-     4	Enacted upon earth,—
+     2	Don't worry, spiders,
+     3	I keep house
+     4	casually.
+     5	The bustle in a house
+     6	The morning after death
+     7	Is solemnest of industries
+     8	Enacted upon earth,—
 
-     5	The sweeping up the heart,
-     6	And putting love away
-     7	We shall not want to use again
-     8	Until eternity.
+     9	The sweeping up the heart,
+    10	And putting love away
+    11	We shall not want to use again
+    12	Until eternity.

tests/expected/all.n.out

@@ -1,13 +1,13 @@
      1	The quick brown fox jumps over the lazy dog.
-     1	Don't worry, spiders,
-     2	I keep house
-     3	casually.
-     1	The bustle in a house
-     2	The morning after death
-     3	Is solemnest of industries
-     4	Enacted upon earth,—
-     5	
-     6	The sweeping up the heart,
-     7	And putting love away
-     8	We shall not want to use again
-     9	Until eternity.
+     2	Don't worry, spiders,
+     3	I keep house
+     4	casually.
+     5	The bustle in a house
+     6	The morning after death
+     7	Is solemnest of industries
+     8	Enacted upon earth,—
+     9	
+    10	The sweeping up the heart,
+    11	And putting love away
+    12	We shall not want to use again
+    13	Until eternity.