Update package version to 3.4.0

pkg.info

@@ -1,9 +1,18 @@
 name: double-conversion
 description: Efficient binary-decimal and decimal-binary conversion routines for IEEE doubles
-version: 3.3.1
+version: 3.4.0
+revision: 1
 url: https://github.com/google/double-conversion
 license: BSD-3-Clause
 architecture: any
-depends: ["gcc-libs", "glibc"]
-make_depends: ["cmake"]
 type: source
+depends:
+  - gcc-libs
+  - glibc
+make_depends:
+  - cmake
+downloads:
+  - url: https://github.com/google/double-conversion/archive/v${BPM_PKG_VERSION}/double-conversion-${BPM_PKG_VERSION}.tar.gz
+    extract_to: ${BPM_SOURCE}
+    extract_strip_components: 1
+    checksum: 42fd4d980ea86426e457b24bdfa835a6f5ad9517ddb01cdb42b99ab9c8dd5dc9

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/google/double-conversion/archive/v${BPM_PKG_VERSION}/double-conversion-${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() {