Android Studio 3.0 - InflateException

I recently updated my working project to Android Studio 3 with all the latest repository versions and i ran into an issue with your library:

`android.view.InflateException: Binary XML file line #0: Binary XML file line #0: Error inflating class com.daimajia.numberprogressbar.NumberProgressBar Caused by: android.view.InflateException: Binary XML file line #0: Error inflating class com.daimajia.numberprogressbar.NumberProgressBar`

`Caused by: java.lang.UnsupportedOperationException: Can't convert value at index 2 to color: type=0x5 at android.content.res.TypedArray.getColor(TypedArray.java:473) at com.daimajia.numberprogressbar.NumberProgressBar.(NumberProgressBar.java:185)`

Line 185:
`mUnreachedBarColor = attributes.getColor(R.styleable.NumberProgressBar_progress_unreached_color,default_unreached_color);`

I use your library as followed:
```

```

```

<item name="progress_reached_color">@color/colorPrimary</item>
<item name="progress_reached_bar_height">5dp</item>
<item name="progress_unreached_color">@android:color/transparent</item>
<item name="progress_text_color">@color/colorPrimary</item>
<item name="progress_text_size">5sp</item>

```

Removing the progress_unreached_color item does not work.
Changing the unreached color to `@color/white` for example does not work.

------

After further investigation i notice i cannot add two of your styling items:
**progress_text_color** & **progress_reached_bar_height**

When i set the other styling parameters, it works fine:

```

```

Start at NumberProgressBar.java line 185 and inspect how the NumberProgressBar style attributes are read during XML inflation. Reproduce the failure with the provided NumberProgressBar_Custom style in Android Studio 3, focusing on progress_text_color and progress_reached_bar_height. Done means the custom style inflates without the reported InflateException while preserving the requested styling.

Written by the indexing model from the issue text.