add interval tree operations for search tips
interval tree and search tips
add binary search
improve binary search
add next-prefix function
add printers and single max search (buggy on non-array elts)
fixed bug with search non-exisent prefix
find k maximums with given prefix
case-insensitive search tips
move search-tips to own package
sendmail fix
binding fixes
add labels prefix search
fixes to interval tree building
Merge branch 'wolfor-master' into origin-dev

Conflicts:
	src/sendmail.lisp
fixed file order in asd
IP and User-agent for tks in email
Merge commit '483c1ba' into HEAD