Implement self-update

ci/before_deploy.sh

@@ -18,7 +18,7 @@ main() {
     test -f Cargo.lock || cargo generate-lockfile
 
     # TODO Update this to build the artifacts that matter to you
-    cross rustc --bin topgrade --target $TARGET --release -- -C lto
+    cross rustc --bin topgrade --target $TARGET --release --all-features -- -C lto
 
     # TODO Update this to package the right artifacts
     cp target/$TARGET/release/topgrade $stage/

ci/script.sh

@@ -8,6 +8,8 @@ main() {
     cargo clippy --all-targets --all-features -- -D warnings
     cross check --target $TARGET
     cross check --target $TARGET --release
+    cross check --target $TARGET --all-features
+    cross check --target $TARGET --release --all-features
 
     if [ ! -z $DISABLE_TESTS ]; then
         return