Merge highlight and aliases options

src/languages/fsharp.js

@@ -3,8 +3,7 @@ const Language = require('../struct/Language');
 class FSharp extends Language {
     constructor() {
         super('fsharp', {
-            highlight: 'fs',
-            aliases: ['fsharp', 'f#', 'fs']
+            aliases: ['fsharp', 'fs']
         });
     }
 }

src/languages/go.js

@@ -3,8 +3,7 @@ const Language = require('../struct/Language');
 class Go extends Language {
     constructor() {
         super('go', {
-            highlight: 'go',
-            aliases: ['go']
+            aliases: ['golang', 'go']
         });
     }
 }

src/languages/haskell.js

@@ -3,7 +3,6 @@ const Language = require('../struct/Language');
 class Haskell extends Language {
     constructor() {
         super('haskell', {
-            highlight: 'hs',
             aliases: ['haskell', 'hs'],
             options: {
                 e: () => ''

src/languages/javascript.js

@@ -3,7 +3,6 @@ const Language = require('../struct/Language');
 class JavaScript extends Language {
     constructor() {
         super('javascript', {
-            highlight: 'js',
             aliases: ['javascript', 'js'],
             options: {
                 harmony: () => '',

src/languages/pascal.js

@@ -3,8 +3,7 @@ const Language = require('../struct/Language');
 class Pascal extends Language {
     constructor() {
         super('pascal', {
-            highlight: 'pas',
-            aliases: ['pascal', 'pas']
+            aliases: ['pascal', 'pas', 'freepascal']
         });
     }
 }

src/languages/python.js

@@ -3,7 +3,6 @@ const Language = require('../struct/Language');
 class Python extends Language {
     constructor() {
         super('python', {
-            highlight: 'py',
             aliases: ['python', 'py'],
             loads: ['python3', 'python2'],
             options: {