Thirsty Geo

@Leguark I'm just getting to know the striplog and Markov Chain object preferences and wondering if you can suggest how you'd clean up a log in the form of a...

Something like this, I suppose: ```df.dropna(how='any').groupby('well')['log'].apply(lambda x: x.to_json(orient='records'))```

Has this functionality been added (bit of an old issue, and maybe I have missed it?). The only mention of pandas I came across is the petrel [io function](https://github.com/agile-geoscience/striplog/blob/9ef74bf5622397c76750a8081831f6a7029a75e8/striplog/utils.py)

That's great @tsrobinson! Much appreciated to focus on this. I'll think a bit more through the typical workflows and see if I can create a which represents a typical situation....

As a tangent of interest - few research articles are present which relate to imputation of data in the compositional data Simplex. The best one I'm aware of for [Deep...