reformat BUILD file using buildifier

Reformatted the BUILD file using the following command line:

$ buildifier -v -mode=fix BUILD
diff --git a/BUILD b/BUILD
index e51ce1e..d0e0108 100644
--- a/BUILD
+++ b/BUILD
@@ -3,70 +3,70 @@
 licenses(["notice"])
 
 cc_library(
-  name = "double-conversion",
-  visibility = ["//visibility:public"],
-  hdrs = [
-    "double-conversion/bignum-dtoa.h",
-    "double-conversion/bignum.h",
-    "double-conversion/cached-powers.h",
-    "double-conversion/diy-fp.h",
-    "double-conversion/double-conversion.h",
-    "double-conversion/fast-dtoa.h",
-    "double-conversion/fixed-dtoa.h",
-    "double-conversion/ieee.h",
-    "double-conversion/strtod.h",
-  ],
-  srcs = [
-    "double-conversion/bignum-dtoa.cc",
-    "double-conversion/bignum.cc",
-    "double-conversion/cached-powers.cc",
-    "double-conversion/diy-fp.cc",
-    "double-conversion/double-conversion.cc",
-    "double-conversion/fast-dtoa.cc",
-    "double-conversion/fixed-dtoa.cc",
-    "double-conversion/strtod.cc",
-    "double-conversion/utils.h"
-  ],
-  linkopts = [
-    "-lm",
-  ]
+    name = "double-conversion",
+    srcs = [
+        "double-conversion/bignum.cc",
+        "double-conversion/bignum-dtoa.cc",
+        "double-conversion/cached-powers.cc",
+        "double-conversion/diy-fp.cc",
+        "double-conversion/double-conversion.cc",
+        "double-conversion/fast-dtoa.cc",
+        "double-conversion/fixed-dtoa.cc",
+        "double-conversion/strtod.cc",
+        "double-conversion/utils.h",
+    ],
+    hdrs = [
+        "double-conversion/bignum.h",
+        "double-conversion/bignum-dtoa.h",
+        "double-conversion/cached-powers.h",
+        "double-conversion/diy-fp.h",
+        "double-conversion/double-conversion.h",
+        "double-conversion/fast-dtoa.h",
+        "double-conversion/fixed-dtoa.h",
+        "double-conversion/ieee.h",
+        "double-conversion/strtod.h",
+    ],
+    linkopts = [
+        "-lm",
+    ],
+    visibility = ["//visibility:public"],
 )
 
 cc_test(
-  name = "cctest",
-  visibility = ["//visibility:public"],
-  deps = [":double-conversion"],
-  srcs = [
-    "test/cctest/cctest.cc",
-    "test/cctest/cctest.h",
-    "test/cctest/checks.h",
-    "test/cctest/gay-fixed.cc",
-    "test/cctest/gay-fixed.h",
-    "test/cctest/gay-precision.cc",
-    "test/cctest/gay-precision.h",
-    "test/cctest/gay-shortest.cc",
-    "test/cctest/gay-shortest.h",
-    "test/cctest/gay-shortest-single.cc",
-    "test/cctest/gay-shortest-single.h",
-    "test/cctest/test-bignum.cc",
-    "test/cctest/test-bignum-dtoa.cc",
-    "test/cctest/test-conversions.cc",
-    "test/cctest/test-diy-fp.cc",
-    "test/cctest/test-dtoa.cc",
-    "test/cctest/test-fast-dtoa.cc",
-    "test/cctest/test-fixed-dtoa.cc",
-    "test/cctest/test-ieee.cc",
-    "test/cctest/test-strtod.cc"
-  ],
-  args = [
-    "test-bignum",
-    "test-bignum-dtoa",
-    "test-conversions",
-    "test-diy-fp",
-    "test-dtoa",
-    "test-fast-dtoa",
-    "test-fixed-dtoa",
-    "test-ieee",
-    "test-strtod"
-  ]
+    name = "cctest",
+    srcs = [
+        "test/cctest/cctest.cc",
+        "test/cctest/cctest.h",
+        "test/cctest/checks.h",
+        "test/cctest/gay-fixed.cc",
+        "test/cctest/gay-fixed.h",
+        "test/cctest/gay-precision.cc",
+        "test/cctest/gay-precision.h",
+        "test/cctest/gay-shortest.cc",
+        "test/cctest/gay-shortest.h",
+        "test/cctest/gay-shortest-single.cc",
+        "test/cctest/gay-shortest-single.h",
+        "test/cctest/test-bignum.cc",
+        "test/cctest/test-bignum-dtoa.cc",
+        "test/cctest/test-conversions.cc",
+        "test/cctest/test-diy-fp.cc",
+        "test/cctest/test-dtoa.cc",
+        "test/cctest/test-fast-dtoa.cc",
+        "test/cctest/test-fixed-dtoa.cc",
+        "test/cctest/test-ieee.cc",
+        "test/cctest/test-strtod.cc",
+    ],
+    args = [
+        "test-bignum",
+        "test-bignum-dtoa",
+        "test-conversions",
+        "test-diy-fp",
+        "test-dtoa",
+        "test-fast-dtoa",
+        "test-fixed-dtoa",
+        "test-ieee",
+        "test-strtod",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [":double-conversion"],
 )