As of Sparkey 3.1.0 it supports snappy and zstd compressions. We should look into supporting these.

Is your feature request related to a problem? Please describe.
#878 adds HTTP endpoints and documents such endpoints in Javadoc. However, tools such as OpenAPI does this in a more holistic and visually pleasing manner and is a good to have.

Describe the solution you'd like
Add OpenAPI documentation with Swagger UI.

**Describe altern

The functions in this file should be factored out to a separate utility lib as they are reused in bitcoin-etl https://github.com/blockchain-etl/ethereum-etl/blob/develop/ethereumetl/misc_utils.py

Over time we've had some things leak into the diff methods that make it more cumbersome to use BigDiffy via code instead of CLI.

For example diffAvro here https://github.com/spotify/ratatool/blob/master/ratatool-diffy/src/main/scala/com/spotify/ratatool/diffy/BigDiffy.scala#L284

User has to manually pass in schema otherwise we they receive a non-informative error regarding null schema, add

As mentioned in our Technical Accomplishments page we currently have very good Lighthouse Scores:

![Lighthouse scores for Web Almanac with 99% for Performance, 100% for Accessibility, 100% for Best Practices and 100% for SEO](https://user-images.githubusercontent.com/10931297/89048613-f8e33500-d347-11ea-9e9

As far as I can tell, these functions are completely unused and can be removed:

• https://github.com/pydata/pandas-gbq/blob/9fb246469af2972db0052522f5000cdafee41b4c/tests/system/test_auth.py#L14
• https://github.com/pydata/pandas-gbq/blob/9fb246469af2972db0052522f5000cdafee41b4c/tests/system/test_auth.py#L39

@medvedev1088
Hi,
I found that there ara two kinds of output in transactions.json.
One is nonstandard, and the other is pubkeyhash.
I thought the nonstandard output is the op_return output, but i found outputs of many (not all ) coinbase txs also are nonstandard. And address of miner is like“nonstandard3318537dfb3135df9f3d950dbdf8a7ae68dd7c7d”.
Here is an example:
transaction: {
"hash":

Stencil points to a server which holds file descriptors for the protobufs. We could add doc/script to setup a SimpleHTTPServer for the given protobufs.