How to remove extra line space on GitHub markdown bullets/lists?

Question

The GitHub markdown code:

1. First item
* subitem
1. Second item

Generates a big space between the First, Second and

Answer 1

An admittably "hacky" but still working solution:

1. Choose any character from here.
2. Copy it and paste it as bullet point:

1. First item  [< two spaces for the linebreak]
◦ subitem1  [< two spaces for the linebreak]
◦ subitem2
2. Second item

3. Don't forget the two spaces for the linebreak.