Disable automatic numbering

I prefer to have my numbered lists be 1. everywhere, and let the Markdown render assign proper numbers. I would like to disable the editor's auto-incrementing of the numbers. (If it correctly did the auto-incrementing, that would be fine, too, but even trivial list edits confuse it.)

Example: type 1. foo<Enter>bar and you get a nicely numbered list:

1. foo
2. bar

Now place the cursor after "foo", press <Enter><Tab>. The list is no longer properly numbered:

1. foo
	1. 
3. bar

I would prefer to be able to turn the auto-numbering off and have it just always use 1. (Or have it auto-number with the same numbers the Markdown render will contain)

1. foo
	1. 
1. bar
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