allow walking nodes in reverse
allow walking nodes in reverse

Signed-off-by: Lakshmi Vyas <55c7f31ee112f1552c5c4836a901c2e5c25e8d64@gmail.com>

sirex/hyde,JoshRosen/hyde,joshbohde/hyde,pascalw/hyde,holmboe/hyde,snorp/hyde,borismus/hyde,nmandery/hyde,pascalw/hyde,andrulik/hyde,op/hyde,sjl/hyde,kerryck/hyde,lakshmivyas/hyde,sjl/hyde,hyde/hyde-old,chetan51/hyde,sharms/hyde,Psycojoker/hyde,jairtrejo/hyde,Psycojoker/hyde,lakshmivyas/hyde,snorp/hyde,Psycojoker/hyde,holmboe/hyde,sharms/hyde,kerryck/hyde,op/hyde,timfreund/hyde,sirex/hyde,chetan51/hyde,hyde/hyde-old,JoshRosen/hyde,pib/hyde-old,jairtrejo/hyde,joshbohde/hyde,m-thielen/hyde,andrulik/hyde,m-thielen/hyde,nmandery/hyde,pib/hyde-old,Psycojoker/hyde,borismus/hyde,m-thielen/hyde