Added 'Fail' method to RunnableComponent which allows component to move from Running to Failed state. Added PollingComponent a timer based runnable component More tests Added FailPromise a thin class to wrap exceptions Fixed error handling in SuccessPromise classes.

namespace Implab.Formats.JSON {
    /// <summary>
    /// internal
    /// </summary>
    enum JSONElementContext {
        None,
        Object,
        Array,
        Closed
    }
}