Updated changelog + added gulp task to autolink PRs and commits in changelog

Author: Golmote

CHANGELOG.md

@@ -1,5 +1,41 @@
 # Prism Changelog
 
+## Unreleased
+
+### New components
+
+* __AsciiDoc__ ([#800](https://github.com/PrismJS/prism/issues/800)) [[`6803ca0`](https://github.com/PrismJS/prism/commit/6803ca0)]
+* __Haxe__ ([#811](https://github.com/PrismJS/prism/issues/811)) [[`bd44341`](https://github.com/PrismJS/prism/commit/bd44341)]
+* __Icon__ ([#803](https://github.com/PrismJS/prism/issues/803)) [[`b43c5f3`](https://github.com/PrismJS/prism/commit/b43c5f3)]
+* __Lua__ ([#804](https://github.com/PrismJS/prism/issues/804)) [[`a36bc4a`](https://github.com/PrismJS/prism/commit/a36bc4a)]
+* __Nix__ ([#795](https://github.com/PrismJS/prism/issues/795)) [[`9b275c8`](https://github.com/PrismJS/prism/commit/9b275c8)]
+* __Oz__ ([#805](https://github.com/PrismJS/prism/issues/805)) [[`388c53f`](https://github.com/PrismJS/prism/commit/388c53f)]
+* __PARI/GP__ ([#802](https://github.com/PrismJS/prism/issues/802)) [[`253c035`](https://github.com/PrismJS/prism/commit/253c035)]
+* __Parser__ ([#808](https://github.com/PrismJS/prism/issues/808)) [[`a953b3a`](https://github.com/PrismJS/prism/commit/a953b3a)]
+
+### Updated components
+
+* __C__:
+	* Highlight directives in preprocessor lines ([#801](https://github.com/PrismJS/prism/issues/801)) [[`ad316a3`](https://github.com/PrismJS/prism/commit/ad316a3)]
+* __C#__:
+	* Highlight directives in preprocessor lines ([#801](https://github.com/PrismJS/prism/issues/801)) [[`ad316a3`](https://github.com/PrismJS/prism/commit/ad316a3)]
+	* Fix detection of float numbers ([#806](https://github.com/PrismJS/prism/issues/806)) [[`1dae72b`](https://github.com/PrismJS/prism/commit/1dae72b)]
+* __F#__:
+	* Highlight directives in preprocessor lines ([#801](https://github.com/PrismJS/prism/issues/801)) [[`ad316a3`](https://github.com/PrismJS/prism/commit/ad316a3)]
+* __JavaScript__:
+	* Highlight true and false as booleans ([#801](https://github.com/PrismJS/prism/issues/801)) [[`ad316a3`](https://github.com/PrismJS/prism/commit/ad316a3)]
+
+### New plugins
+
+* __Previewer: Time__ ([#790](https://github.com/PrismJS/prism/issues/790)) [[`88173de`](https://github.com/PrismJS/prism/commit/88173de)]
+* __Previewer: Angle__ ([#791](https://github.com/PrismJS/prism/issues/791)) [[`a434c86`](https://github.com/PrismJS/prism/commit/a434c86)]
+
+### Other changes
+
+* Increase mocha's timeout [[`f1c41db`](https://github.com/PrismJS/prism/commit/f1c41db)]
+* Prevent most errors in IE8. Fix #9 [[`9652d75`](https://github.com/PrismJS/prism/commit/9652d75)]
+* Add U.S. Web Design Standards on homepage. Fix #785 [[`e10d48b`](https://github.com/PrismJS/prism/commit/e10d48b), [`79ebbf8`](https://github.com/PrismJS/prism/commit/79ebbf8), [`2f7088d`](https://github.com/PrismJS/prism/commit/2f7088d)]
+
 ## 1.2.0 (2015-10-07)
 
 ### New components

gulpfile.js

@@ -19,7 +19,8 @@ var gulp   = require('gulp'),
 		],
 		plugins: ['plugins/**/*.js', '!plugins/**/*.min.js'],
 		showLanguagePlugin: 'plugins/show-language/prism-show-language.js',
-		autoloaderPlugin: 'plugins/autoloader/prism-autoloader.js'
+		autoloaderPlugin: 'plugins/autoloader/prism-autoloader.js',
+		changelog: 'CHANGELOG.md'
 	};
 
 gulp.task('components', function() {
@@ -113,4 +114,19 @@ gulp.task('languages-plugins', function (cb) {
 	});
 });
 
+gulp.task('changelog', function (cb) {
+	return gulp.src(paths.changelog)
+		.pipe(replace(
+			/\(#(\d+)\)/g,
+			'([#$1](https://github.com/PrismJS/prism/issues/$1))'
+		))
+		.pipe(replace(
+			/\[[\da-f]+(?:, *[\da-f]+)*\]/g,
+			function (match) {
+				return match.replace(/([\da-f]+)/g, '[`$1`](https://github.com/PrismJS/prism/commit/$1)');
+			}
+		))
+		.pipe(gulp.dest('.'));
+});
+
 gulp.task('default', ['components', 'plugins', 'build']);