Unable to build signals from costructors

[rcalxrc08]

Hi, very nice library; I have noticed the following:
Assume you have a type where you have specified the constructor:

struct Trial
       x::Float64
       Trial(x_::Float64)=new(x_)
end

If I try to build a Signal from that I get:

Signal(Trial,1.0)
ERROR: MethodError: no method matching Signal(::Type{Trial}, ::Float64)
Closest candidates are:
  Signal(::Any, ::Any, ::Any, ::Any, ::Any, ::Any) at .julia\packages\Signals\559HJ\src\Signal.jl:11
  Signal(::Function, ::Any...; state, strict_push, pull_type, v0) at .julia\packages\Signals\559HJ\src\Signal.jl:52
  Signal(::Any; kwargs...) at .julia\packages\Signals\559HJ\src\Signal.jl:47
Stacktrace:
 [1] top-level scope at REPL[31]:1

The trivial workaround is to build the signal directly using:

sig=Signal(Trial(1.0))
Signal
value: Trial(1.0)

But this would not work in case 1.0 is a signal.
The proper way to do this is to build the Signal using the do syntax, but in case of multiple structs in can be awful to read.
Would it be possible to implement a signal costructor for types as well?

[TsurHerman]

Hi, glad that you like it.
The simplest workaround to what you want is by extending Signals like this:

using Signals
Signals.Signal(dt::DataType, args...) = begin
    Signal(args...) do args
        dt(args...)
    end
end

If you find this useful, please submit a pull-request including a line or two of documentation in the right place and I'll merge it.