Input.action_press() second parameter doesn´t have default value

Created by: Ranoller

Godot version:

9eb4b6d91a64661f8e2823a70f935c602f8a725a

OS/device including version:

win 7

Issue description:

Second parameter for Input.action_press was merged in https://github.com/godotengine/godot/commit/8c45282d21155009e5b239b8df610661409981e6 but this commit doesn´t include a default value nor a description in docs with expected values interval to pass. Actual games with action_press in code will fail because a second value is expected, and no info is provided to what to pass in there (I think that is float 0-1 but it should in the class documentation)

Steps to reproduce:

Use Input.action_press without pass second parameter.