Tidy modules; update to go 1.15

Makefile

@@ -6,7 +6,7 @@ IMPORT_PATH=github.com/Jigsaw-Code/outline-go-tun2socks
 ELECTRON_PATH=$(IMPORT_PATH)/outline/electron
 LDFLAGS='-s -w'
 ANDROID_LDFLAGS='-w' # Don't strip Android debug symbols so we can upload them to crash reporting tools.
-TUN2SOCKS_VERSION=v1.16.9
+TUN2SOCKS_VERSION=v1.16.11
 XGO_LDFLAGS='-s -w -X main.version=$(TUN2SOCKS_VERSION)'
 
 ANDROID_BUILDDIR=$(BUILDDIR)/android
@@ -21,7 +21,7 @@ LINUX_BUILDDIR=$(BUILDDIR)/linux
 ANDROID_BUILD_CMD="$(GOBIND) -a -ldflags $(ANDROID_LDFLAGS) -target=android -tags android -work -o $(ANDROID_ARTIFACT)"
 ANDROID_OUTLINE_BUILD_CMD="$(ANDROID_BUILD_CMD) $(IMPORT_PATH)/outline/android $(IMPORT_PATH)/outline/shadowsocks"
 ANDROID_INTRA_BUILD_CMD="$(ANDROID_BUILD_CMD) $(IMPORT_PATH)/intra $(IMPORT_PATH)/tunnel $(IMPORT_PATH)/tunnel/intra $(IMPORT_PATH)/tunnel/intra/doh $(IMPORT_PATH)/tunnel/intra/split $(IMPORT_PATH)/tunnel/intra/protect"
-IOS_BUILD_CMD="$(GOBIND) -a -ldflags $(LDFLAGS) -bundleid org.outline.tun2socks -target=ios/arm,ios/arm64 -tags ios -o $(IOS_ARTIFACT) $(IMPORT_PATH)/outline/apple $(IMPORT_PATH)/outline/shadowsocks"
+IOS_BUILD_CMD="$(GOBIND) -a -ldflags $(LDFLAGS) -bundleid org.outline.tun2socks -target=ios/arm64 -tags ios -o $(IOS_ARTIFACT) $(IMPORT_PATH)/outline/apple $(IMPORT_PATH)/outline/shadowsocks"
 MACOS_BUILD_CMD="./tools/$(GOBIND) -a -ldflags $(LDFLAGS) -bundleid org.outline.tun2socks -target=ios/amd64 -tags ios -o $(MACOS_ARTIFACT) $(IMPORT_PATH)/outline/apple $(IMPORT_PATH)/outline/shadowsocks"
 WINDOWS_BUILD_CMD="$(XGOCMD) -ldflags $(XGO_LDFLAGS) --targets=windows/386 -dest $(WINDOWS_BUILDDIR) $(ELECTRON_PATH)"
 LINUX_BUILD_CMD="$(XGOCMD) -ldflags $(XGO_LDFLAGS) --targets=linux/amd64 -dest $(LINUX_BUILDDIR) $(ELECTRON_PATH)"

go.mod

@@ -1,21 +1,15 @@
 module github.com/Jigsaw-Code/outline-go-tun2socks
 
-go 1.14
+go 1.15
 
 require (
 	github.com/Jigsaw-Code/choir v1.0.1
 	github.com/Jigsaw-Code/getsni v0.0.0-20190807203514-efe2dbf35d1f
 	github.com/Jigsaw-Code/outline-ss-server v1.2.1
 	github.com/eycorsican/go-tun2socks v1.16.11
-	github.com/oschwald/maxminddb-golang v1.7.0 // indirect
-	github.com/prometheus/client_golang v1.7.1 // indirect
-	github.com/prometheus/common v0.13.0 // indirect
-	github.com/prometheus/procfs v0.1.3 // indirect
-	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
-	github.com/shadowsocks/go-shadowsocks2 v0.1.3 // indirect
 	github.com/songgao/water v0.0.0-20200317203138-2b4b6d7c09d8 // indirect
 	golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a // indirect
-	golang.org/x/mobile v0.0.0-20200329125638-4c31acba0007 // indirect
+	golang.org/x/mobile v0.0.0-20200801112145-973feb4309de // indirect
 	golang.org/x/net v0.0.0-20200904194848-62affa334b73
 	golang.org/x/sys v0.0.0-20200909081042-eff7692f9009
 	google.golang.org/protobuf v1.25.0 // indirect