adds min/max empty lines after document start/end

[wookietreiber]

@adrienverge What do you think?

Note: This currently only includes the changes to document start. Will do the changes for document end and documentation later, based on your feedback.

---

fixes #340

[coveralls]

Coverage increased (+0.02%) to 97.528% when pulling 4c86d3f on idiv-biodiversity:document/empty-lines into 4374490 on adrienverge:master.

[adrienverge]

Hello Christian,

This looks good!
I have a few remarks, please see my comments below.

Also, can you add a few more test cases:

• For a document which just contains ---, nothing more?
• In conjunction with empty-lines?
  For example, {empty-lines: {max: 1}, document-start: {min-empty-lines-after: 2} should report problems for , \n and \n\n.
• Are there other corner cases that I didn't think of?

This currently only includes the changes to document start. Will do the changes for document end and documentation later, based on your feedback.

OK

[wookietreiber]

@adrienverge Thanks for the review. I'm gonna do the rest of the work, likely spread over the next couple of days. When I'm done, I'm going to remove the draft status and ping you for another review (dunno if removing the draft issues a notification, maybe re-requesting a review does).

[adrienverge]

Thanks! I don't know about removing the draft status, but any message or comment will get me notified (however I'll may be in vacations so please accept some delay in my review...)