Improve performance of URLFactory.create()

[dreis2211]

Hi,

this PR improves the performance of URLFactory.create(). An isolated microbenchmark shows the following results.

Benchmark                      Mode  Cnt     Score     Error  Units
MyBenchmark.testURINew         avgt   10   717,888 ± 107,067  ns/op
MyBenchmark.testURIOld         avgt   10  1139,942 ±  13,933  ns/op

Cheers,
Christoph

[stevehu]

@dreis2211 Thanks a lot for your help.