Update package version to 3.8.0

pkg.info

@@ -1,10 +1,18 @@
 name: libsigcpp-3.0
 description: Typesafe callback system for standard C++
-version: 3.6.0
-revision: 3
+version: 3.8.0
+revision: 1
 url: https://libsigcplusplus.github.io/libsigcplusplus/
 license: LGPL
 architecture: any
-depends: ["gcc-libs"]
-make_depends: ["meson","mm-common"]
 type: source
+depends:
+  - gcc-libs
+make_depends:
+  - meson
+  - mm-common
+downloads:
+  - url: https://github.com/libsigcplusplus/libsigcplusplus/archive/refs/tags/${BPM_PKG_VERSION}.tar.gz
+    extract_to: ${BPM_SOURCE}
+    extract_strip_components: 1
+    checksum: fb2356847434c2cef8fc6093b2fd571cf9de9ba795d3b8ffe4ab70d1b8553cd9

source.sh

@@ -2,16 +2,6 @@
 # BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
 # BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT
 
-DOWNLOAD="https://github.com/libsigcplusplus/libsigcplusplus/archive/refs/tags/${BPM_PKG_VERSION}.tar.gz"
-FILENAME="${DOWNLOAD##*/}"
-
-# The prepare function is executed in the root of the temp directory
-# This function is used for downloading files and putting them into the correct location
-prepare() {
-  wget "$DOWNLOAD"
-  tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
-}
-
 # The build function is executed in the source directory
 # This function is used to compile the source code
 build() {