Quick update to CHANGES, mention especially the new parsing of ->
Quick update to CHANGES, mention especially the new parsing of ->

 So -> is at level 99 since commit 15515. In particular it has now
 *less* priority than <->, i.e. A->B<->C is now parsed as A->(B<->C)
 instead of the former awkward and beginner-misleading (A->B)<->C.
 Sorry, I was planning to do a separate commit for that, but I forgot.
 In fact, the parsing rules for -> were slightly changed during
 Pierre B's recent conversion of -> to a true Notation, leading
 to a nasty sitution : A->B<->C->D was parsed as A->(B<->(C->D)).
 With no obvious solution to restore full compatibility, we decided
 to go for the parsing described above, both easy to implement
 and to work with.

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@15523 85f007b7-540e-0410-9357-904b9bb8a0f7

jpdeplaix/coq,asr/coq,Lionel-Rieg/coq,jpdeplaix/coq,Matafou/coq,SkySkimmer/coq,aspiwack/coq,gares/coq,pirapira/coq2rust,maximedenes/coq,ale-f/coq,Zimmi48/coq,coq/coq,mlasson/coq,maximedenes/coq,ejgallego/coq,ejgallego/coq,shindere/coq,Lionel-Rieg/coq,pirapira/coq2rust,asr/coq,JasonGross/coq,coq/coq,aspiwack/coq,amintimany/coq,ppedrot/coq,mlasson/coq,Matafou/coq,JasonGross/coq,ale-f/coq,8l/coq,amintimany/coq,Zimmi48/coq,barras/coq,TheTypoMaster/coq,pirbo/coq,mattam82/coq,pirbo/coq,william-lawvere/coq,william-lawvere/coq,gares/coq,letouzey/coq-wip,barras/coq,maximedenes/coq,ejgallego/coq,gmalecha/coq,amintimany/coq,coq/coq,letouzey/coq-wip,mattam82/coq,silene/coq,letouzey/coq-wip,herbelin/github-coq,JasonGross/coq,letouzey/coq-wip,TOSPIO/coq,william-lawvere/coq,ppedrot/coq,silene/coq,jhjourdan/coq,aspiwack/coq,SkySkimmer/coq,herbelin/github-coq,Matafou/coq,Zimmi48/coq,ejgallego/coq,8l/coq,TOSPIO/coq,8l/coq,shindere/coq,coq/coq,TheTypoMaster/coq,gmalecha/coq,asr/coq,Ptival/coq,pirbo/coq,gmalecha/coq,jhjourdan/coq,mattam82/coq,Lionel-Rieg/coq,gares/coq,shindere/coq,barras/coq,Ptival/coq,gares/coq,jpdeplaix/coq,TheTypoMaster/coq,Ptival/coq,pirapira/coq2rust,ale-f/coq,ppedrot/coq,letouzey/coq-wip,jhjourdan/coq,SkySkimmer/coq,TOSPIO/coq,gares/coq,maximedenes/coq,maximedenes/coq,ppedrot/coq,mlasson/coq,SkySkimmer/coq,ppedrot/coq,silene/coq,Zimmi48/coq,JasonGross/coq,herbelin/github-coq