Update bfg dependency to 0.7

Author: jimporter

.github/workflows/build.yml

@@ -163,7 +163,7 @@ jobs:
         if: "!startsWith(matrix.os, 'windows-')"
         run: |
           pushd mettle
-          9k build --backend=ninja --prefix=${HOME} --vendorize
+          9k build --backend=ninja --prefix=${HOME}
           cd build
           ninja install
           popd
@@ -175,7 +175,7 @@ jobs:
         if: startsWith(matrix.os, 'windows-')
         run: |
           pushd mettle
-          9k build --backend=ninja --prefix=$env:HOME\mettle --vendorize
+          9k build --backend=ninja --prefix=$env:HOME\mettle
           cd build
           ninja install
           popd

build.bfg

@@ -1,6 +1,6 @@
 # -*- python -*-
 
-bfg9000_required_version('>=0.6.0')
+bfg9000_required_version('>=0.7.0')
 project('bencodehpp', version='0.3-dev')
 
 global_options([opts.std(argv.std)], lang='c++')