add git aliases and fe extensions

.gitconfig

@@ -3,6 +3,7 @@
   email = me@barakmich.com
 
 [alias] 
+  br = branch -a -v
   st = status -uno
   stat = status -uno
   ci = commit
@@ -16,6 +17,8 @@
   ours   = "!f() { git checkout --ours $@ && git add $@; }; f"
   theirs = "!f() { git checkout --theirs $@ && git add $@; }; f"
   praise = blame
+  hist = show-branch -a
+  undo-last = reset HEAD^
 
 [diff]  
   renamelimit = 0