the reason is that using generic instance results in:

```
/dev/purescript-spec/output/Data.Generic.Rep.Show/index.js:13
var GenericShowArgs = function (genericShowArgs) {
                               ^

RangeError: Maximum call stack size exceeded
    at new GenericShowArgs (/dev/purescript-spec/output/Data.Generic.Rep.Show/index.js:13:32)
    at Object.genericShowArgsArgument (/dev/purescript-spec/output/Data.Generic.Rep.Show/index.js:20:12)
    at showGroup (/dev/purescript-spec/output/Test.Spec/index.js:241:228)
    at showGroup (/dev/purescript-spec/output/Test.Spec/index.js:241:456)
```

as they are not Aff specific any more

now consoleReporter and specReporter need to coordinate tests which are running in parallel

only log things to console when execution of test is finished so we don't need to do redraw

with `exit: false` and you can get test results
with `[]` as reporters you can get no reporting
so removed runSpec,runSpec' and renamed run,run' to runSpec and runSpecM

for example here all types are derived by compiler:
```
foo :: forall t19. Monad t19 => SpecT Aff Unit t19 Unit
foo = it "foo" $ delay $ Milliseconds 100.0

baz :: forall t17 t18 t19. Monad t19 => SpecT t18 t17 t19 Unit
baz = describe "baz" $ pure unit

fix :: forall t18 t19. Monad t19 => MonadThrow Error t18 => SpecT t18 Unit t19 Unit
fix = it "fiz" $ 1 `shouldEqual` 1
```
vs beofre you would get huge `WriterT ...` type.