nested expansion; #74

[vreuter]

If I understood correctly, I think now I see the expected/desired behavior that wasn't seen for me on attmap dev and yacman dev, which motivated #74

In [1]: from yacman import YacAttMap

In [2]: y=YacAttMap(filepath="/Users/vince/temp.yaml")

In [3]: y.database.port
Out[3]: '5432'

In [4]: y.port
Out[4]: '5432'

In [5]: y.to_dict(expand=True)["database"]["port"]
Out[5]: '5432'

In [6]: y.to_dict(expand=True)["database"]
Out[6]: 
{'name': 'pipestat-test',
 'user': 'postgres',
 'password': 'pipestat-password',
 'host': 'localhost',
 'port': '5432'}

In [7]: cat /Users/vince/temp.yaml
name: test
record_identifier: sample1
schema_path: sample_output_schema.yaml
port: $PRT
database:
  name: pipestat-test
  user: postgres
  password: pipestat-password
  host: localhost
  port: $PRT

[vreuter]

This is into dev so perhaps should precede merge of #72

[stolarczyk]

Great, thanks for implementing this

This is into dev so perhaps should precede merge of #72

Agreed. Once it's merged, I'll run some tests with packages that depend on this to see if there are any obvious breaking effects.

[stolarczyk]

@nsheff should we merge this to dev to test for a while?

[nsheff]

Sure.