Improve threading:

[rbouqueau]

• deal with specific threads (e.g. one specific for log thread logs #28 or inputs Inputs all share the same lock with the module #31 )
• add a thread to the pool (e.g. the main thread)
• allow merging of event loops (e.g. keyboard with video on thread 0) -> may require cooperation
• some modules may requires to suspend -> may require cooperation (there used to be a return value system)

General good idea:

kj::Promise<kj::String> contentPromise =
    fetchHttp("http://example.com");

kj::String content = contentPromise.wait(waitScope);

question: could allow monothread with multiple inputs?

easy to say “run the event loop until this promise resolves, then return the result”.
https://capnproto.org/cxxrpc.html
msvc2015: https://github.com/gordonmcshane/capnproto/tree/vs2015

[rbouqueau]

Related to #14

[rbouqueau]

Modern C++ libuv wrapper: https://github.com/skypjack/uvw