1.14 block updates missing?

Nobody has claimed this yet.

I just pulled a master docker image and build new blocks directory with the latest 1.14.3 jar and my resource pack of preference (Stevens Traditional 64x64 [1.14.3]).

After doing a map render with the new block files I was getting a few unknown block messages:

```
2019-07-02 12:25:57 [INFO] [default] Unknown block minecraft:bamboo age=1,leaves=none,waterlogged=false,
2019-07-02 12:44:46 [INFO] [default] Unknown block minecraft:composter level=0,waterlogged=false,
2019-07-02 13:03:29 [INFO] [default] Unknown block minecraft:sign waterlogged=false,
2019-07-02 13:29:36 [INFO] [default] Unknown block minecraft:lily_pad_rotated rotation=0,waterlogged=false,
2019-07-02 13:29:36 [INFO] [default] Unknown block minecraft:lily_pad_rotated rotation=2,waterlogged=false,
2019-07-02 13:29:36 [INFO] [default] Unknown block minecraft:lily_pad_rotated rotation=1,waterlogged=false,
2019-07-02 13:29:36 [INFO] [default] Unknown block minecraft:lily_pad_rotated rotation=3,waterlogged=false,
2019-07-02 14:37:55 [INFO] [default] Unknown block minecraft:wall_sign waterlogged=false,
```

I think some of these are fixed with the #7 PR, but possibly not the lily_pad_rotated one.

@miclav are you able to confirm about the lily_pad_rotated case?

@m0r13 do you know when you might have time to review and merge all this and update the docker image?

I would try and patch it in myself but I don't really know how to do that with docker.

Start by reviewing the block data generated from the 1.14.3 jar and the #7 PR, then reproduce the reported map render with the Docker image. Compare the output against the unknown bamboo, composter, sign, lily_pad_rotated, and wall_sign blocks; done means the supported blocks render without these unknown-block messages and the Docker image includes the update.

Written by the indexing model from the issue text.