scala 2.10 support broken since 1.2.0

[cvogt]

Since 1.2.0 Scala 2.10 shows the following type error

Trying to annotate the type leads to a compiler crash. Working through all the places where the compiler show's errors in -Xprint:typer and filling them in didn't help. Here is my attempt: https://github.com/xdotai/diff/tree/2.10

If anyone finds a solution, please let me know.

[SethTisue]

(just my opinion, but I suggest dropping 2.10 support and closing this)