Flow improvement

[scoavoux]

• Autopair * and _ (emphasis and bold).
• Automatically continue blockquotes (after a return, begin newline with >)
• Allow one empty blockquote line
• Automatically continue lists (after return, begin newline with the same symbol as current line if + - *, or with n + 1 if n. n)

[scoavoux]

commit 2b87e80 adds the autopairing

[XachaB]

Commit d1b888b adds the automatical continuation of blockquotes and lists. The auto added text can be deleted by typing [enter](we assume that this signals the end of a list), or by typing [delete].

Supported

 > test
 >

 1. test
 2.

 1) test
 2) 

 #) test
 #) 

 * test
 *

 + test
 + 

 - test
 - 

Not supported

 (1)

[scoavoux]

We still need to find a way to allow one empty blockquote line, ie. delete the last empty lines after two new lines (and not one).

> some text
> 
> next paragraph