jzarr build failing due to jblosc

[joshmoore]

+ java -cp target/jzarr-1.0.0.jar zarr_implementations.jzarr.App
Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'blosc': Native library (linux-x86-64/libblosc.so) not found in resource path (target/jzarr-1.0.0.jar)
	at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:277)
	at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:403)
	at com.sun.jna.Native.register(Native.java:1529)
	at com.sun.jna.Native.register(Native.java:1252)
	at org.blosc.IBloscDll.<clinit>(IBloscDll.java:15)
	at org.blosc.JBlosc.compressCtx(JBlosc.java:213)
	at com.bc.zarr.CompressorFactory$BloscCompressor.compress(CompressorFactory.java:327)
	at com.bc.zarr.chunk.ChunkReaderWriterImpl_Byte.write(ChunkReaderWriterImpl_Byte.java:67)
	at com.bc.zarr.ZarrArray.write(ZarrArray.java:239)
	at zarr_implementations.jzarr.App.main(App.java:126)

cc: @SabineEmbacher