Add autolink option

[NoahDragon]

No description provided.

[coveralls]

Coverage decreased (-71.1%) to 28.889% when pulling 7efd19a on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-71.1%) to 28.889% when pulling 554151d on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-71.1%) to 28.889% when pulling c77bcd3 on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-71.1%) to 28.889% when pulling c77bcd3 on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-71.1%) to 28.889% when pulling 2bea171 on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-71.1%) to 28.889% when pulling 2bea171 on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-71.1%) to 28.889% when pulling 2bea171 on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-72.9%) to 27.083% when pulling 8a20f41 on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-72.9%) to 27.083% when pulling e9c6be0 on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-72.9%) to 27.083% when pulling 23e7cb1 on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-14.9%) to 85.106% when pulling 683d22c on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-14.9%) to 85.106% when pulling 683d22c on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-12.8%) to 87.234% when pulling 494a9aa on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-12.8%) to 87.234% when pulling 494a9aa on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-12.8%) to 87.234% when pulling a7ca0b0 on autolink-option into b2cd534 on master.

[coveralls]

Coverage decreased (-12.8%) to 87.234% when pulling 42f7c21 on autolink-option into b2cd534 on master.

[NoahDragon]

Most of the code is copied from marked renderer.link, assuming they have properly tested.