[ ] handle .o files in the present directory:
  ``Evaluation aborted: "exception: mkTopLevEnv: not interpreted main:RepoFormat"''
    doesn't happen with projects that compile in a separate directory (e.g. when
    using cabal)
[ ] check if imports have changed, if that's the case merge new module into
    compBuffer from last succesfull compile
[ ] use the compiler specified in .setup-config for finding out the
    libdir
[ ] use the newSession wrapper only with ghc 6.6 release since it's
    wrong with newer versions
[ ] port a module browser from slime instead of using the fuzzy buffer
    for browsing a module

done:
[X] use a separate session for all cabal projects
[X] save shimState on succesfull compile and reuse it if parsing fails
[X] complete module names until next dot
[X] hangs sometimes (only C-g helps)