weatherforecast rainfall rounding issue

[vincep5]

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Platform: Place your platform here... give us your web browser/Electron version and your hardware (Raspberry Pi 2/3, Windows, Mac, Linux, System V UNIX).
Raspberry Pi 3B

Node Version: Make sure it's version 0.12.13 or later.
v9.11.2

MagicMirror Version: Now that the versions have split, tell us if you are using the PHP version (v1) or the newer JavaScript version (v2).
v2.4.1

Description: Provide a detailed description about the issue and include specific details to help us understand the problem. Adding screenshots will help describing the problem.
weatherforecast is rounding rain before it converts it into imperial. So, if the real rainfall is 1.34 the code is turning that into "1" and then performing the calculation to imperial against 1 and not 1.34

Steps to Reproduce: List the step by step process to reproduce the issue.
setup your config to have units: "imperial" in the main config section.
setup your config to have showRainAmount:true in the weatherforecast module.

Expected Results: Describe what you expected to see.
Rainfall amounts should vary day to day.

Actual Results: Describe what you actually saw.
Often many days have the same rainfall amounts.

Configuration: What does the used config.js file look like? Don't forget to remove any sensitive information!
var config = {

units: "imperial",
}

..........

{
	module: "weatherforecast",
	position: "top_right",
	header: "Forecast",
	config: {
		updateInterval: 60 * 60 * 1000, // every 60 minutes
		showRainAmount: true,
		roundTemp: true,
		location: "hidden",
		locationID: "hidden",  //ID from http://www.openweathermap.org/help/city_list.txt
		appid: "hidden"
	}
},

Additional Notes: Provide any other relevant notes not previously mentioned. This is optional.
Code in weatherforecast.js line 353 : rain: this.roundValue(forecast.rain)
That is rounding the value before it does the calculation to convert into imperial.

[MichMich]

Fix merged: #1376