python-audioread: update to 2.1.6

Let the users decide which backend to use.

srcpkgs/python-audioread/INSTALL.msg

@@ -0,0 +1,4 @@
+To decode audio files the library supports different backends:
+- gstreamer via gst1-python
+- ffmpeg via its command-line interface
+- wave, aifc, and sunau files via Python standard library

srcpkgs/python-audioread/python3-audioread.INSTALL.msg

@@ -0,0 +1,4 @@
+To decode audio files the library supports different backends:
+- gstreamer via gst1-python3
+- ffmpeg via its command-line interface
+- wave, aifc, and sunau files via Python standard library

srcpkgs/python-audioread/template

@@ -1,20 +1,19 @@
 # Template file for 'python-audioread'
 pkgname=python-audioread
-version=2.1.5
-revision=2
+version=2.1.6
+revision=1
 noarch=yes
-nocross=yes
 wrksrc="audioread-${version}"
 build_style=python-module
 pycompile_module="audioread"
 hostmakedepends="python-setuptools python3-setuptools"
-depends="gst1-python"
+depends="python"
 short_desc="Multi-library, cross-platform audio decoding (Python2)"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 homepage="https://github.com/sampsyo/audioread/"
 license="MIT"
 distfiles="${PYPI_SITE}/a/audioread/audioread-${version}.tar.gz"
-checksum=36c3b118f097c58ba073b7d040c4319eff200756f094295677567e256282d0d7
+checksum=b0b9270c20833a75ce0d167fb2fdad52ddcd8e8f300be8afad3ac9715850bc50
 
 post_install() {
 	sed -n '2,13p' decode.py > LICENSE
@@ -23,7 +22,7 @@ post_install() {
 
 python3-audioread_package() {
 	noarch=yes
-	depends="gst1-python3"
+	depends="python3"
 	pycompile_module="audioread"
 	short_desc="${short_desc/Python2/Python3}"
 	pkg_install() {