fsharp/FAKE — pull request #212 by vasily-kirichenko (2013-11-02 18:00:40+00:00)
Title: Add TargetBuilder computation expression

It seems to support all kinds of expressions:
```fsharp
Target "All features" {
let f x = x * x
printfn "f 2 = %d" (f 2)

try
for i in [1..10] do
try
printfn "%d" i
failwith "an exn"
with e -> printfn "exn catched %A" e
finally
printfn "from finally"
}
```