better formatting (#44)

motvation: update swift-format

changes:
* explicitly set swift version
* update swift-format to v44

Author: tomerd

.swiftformat

@@ -1,5 +1,6 @@
 # file options
 
+--swiftversion 5.1
 --exclude .build
 
 # format options

docker/Dockerfile

@@ -30,7 +30,7 @@ RUN chmod 755 $HOME/.tools/symbolicate-linux-fatal
 
 # swiftformat (until part of the toolchain)
 
-ARG swiftformat_version=0.40.12
+ARG swiftformat_version=0.44.0
 RUN git clone --branch $swiftformat_version --depth 1 https://github.com/nicklockwood/SwiftFormat $HOME/.tools/swift-format
 RUN cd $HOME/.tools/swift-format && swift build -c release
 RUN ln -s $HOME/.tools/swift-format/.build/release/swiftformat $HOME/.tools/swiftformat