[#146] Fix mbrola voices being loaded for espeak backend #338

	# Test on windows with espeak-1.50 and festival-2.5

	name: Windows

	on: [push, pull_request]

	jobs:
	test:
	runs-on: windows-latest

	env:
	PHONEMIZER_ESPEAK_LIBRARY: "C:\\Program Files\\eSpeak NG\\libespeak-ng.dll"
	PHONEMIZER_FESTIVAL_EXECUTABLE: "C:\\festival\\src\\main\\festival.exe"

	steps:
	- name: Checkout phonemizer
	uses: actions/checkout@v2

	- name: Setup python
	uses: actions/setup-python@v2

	- name: Cache festival
	uses: actions/cache@v2
	id: cache-festival
	with:
	path: \|
	C:\festival
	C:\speech_tools
	key: ${{ runner.os }}-festival

	- name: Install espeak
	if: steps.cache-espeak.outputs.cache-hit != 'true'
	run: \|
	$source = 'https://github.com/espeak-ng/espeak-ng/releases/download/1.50/espeak-ng-20191129-b702b03-x64.msi'
	Invoke-WebRequest -Uri $source -OutFile espeak.msi
	Start-Process msiexec.exe -Wait -ArgumentList '/I espeak.msi /qn'

	- name: Install festival
	if: steps.cache-festival.outputs.cache-hit != 'true'
	run: \|
	$uri = "https://sourceforge.net/projects/e-guidedog/files/related-third-party-software/0.3"

	$webclient = New-Object System.Net.WebClient
	$webclient.DownloadFile("$uri" + "/festival-2.5-win.7z", "festival-2.5.7z")
	$webclient.DownloadFile("$uri" + "/speech_tools-2.5-win.7z", "speech_tools-2.5.7z")

	set-alias sz "$env:ProgramFiles\7-Zip\7z.exe"
	sz x -oC:\ festival-2.5.7z
	sz x -oC:\ speech_tools-2.5.7z

	- name: Install phonemizer
	run: \|
	pip install --upgrade pip setuptools
	pip install .[test]

	- name: Version phonemizer
	run: \|
	phonemize --version

	- name: Test phonemizer
	run: pytest -v

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