Incompatibility with newest Widevine on ARM systems - workaround available

**MOD-EDIT:** As of 2018-09-06 the newest widevine automatically downloaded through inputstreamhelper is causing errors on ARM systems. See https://github.com/emilsvennesson/script.module.inputstreamhelper/issues/35#issuecomment-418875665 for a possible workaround.
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*I'm submitting a ...*
- [ ] bug report
- [ ] feature request
- [ x] support request

## General infomration

### Prerequisites

* [ ] Are you running the latest version?
Yes. 0.3.12

### Description

[Description of the bug or feature]
The video playback does not start and there are no errors.

### Steps to Reproduce

1. Start Netflix add-on
2. Start some film

## Context (Environment)

### Installation

* [x ] I installed the plugin via zip from the Releases page
* [ ] I´m using the Netflix Repo
* [ ] I´m using a different source (Please tell which)

#### Additional informatin on the environment

LibreELEC-RPi2.arm-9.0-Milhouse-20180904210311-#0904-g1725942.tar
plugin.video.netflix-0.13.12.zip

## Debug log

https://paste.kodi.tv/oboqobuzom

Start by reviewing the linked inputstreamhelper issue and the Kodi debug log at paste.kodi.tv/oboqobuzom. Reproduce playback on the listed LibreELEC-RPi2 ARM environment with plugin.video.netflix 0.13.12 and inputstreamhelper 0.3.12; done means identifying and resolving the Widevine compatibility failure so a film starts playing.

Written by the indexing model from the issue text.