[eledmac] \edtext without lemma : error or warning

[maieul@xxxxxxxxxx]

Dear users,

a user send me a problem. His problem was because I did something like 
this:
\edtext{xxx}{xxx}, and so, created a \edtext without footnotes, which 
made eledmac / eledpar have a problem to count the notes, and so one, to 
print them in the good place (yes, it's quite complex!).

I have added to eledmac a code to print a warning when that happens. Do 
you think an error will be better?

Maïeul