Add config

[R5dan]

Adds a new Config class with defaults defined

Allows setting of:

• language
• proxy
• request url
• session
• region

Use is global so don't need to set them separately everywhere (for example you most likely would use proxy everywhere and now you just set it once)

Allows creation of custom Configs and to set them as default.

Currently is a draft as only Ticker.history and download have it implemented

[R5dan]

@ValueRaider what do you think? This would help with issues like #2210

[ValueRaider]

The quantity of code changes concerns me - code bloat. Can it be done with less? I had already been thinking of a related solution for network settings but more like this:

yf.set_network(session=X, proxy=Y)
# which passes directly through to YfData singleton
YfData._set_session(X)
YfData._set_proxy(Y)

20 LoC for everything? And consider relaxing on the docstrings - set_session is obvious, it sets the session.

(I've not missed lang and region but that is another discussion, let's find agreement on network stuff first)

Merge branch 'dev' into config

This will block you squashing commits. Better to rebase.

[R5dan]

The quantity of code changes concerns me - code bloat

Most of that is Merge branch 'dev' into config and updating the inputs (so there isnt an option for proxy or timeout just config

Merge branch 'dev' into config

This will block you squashing commits. Better to rebase.

Yes, I realize that, I was given a button to "update" the pr as I had forgotten to pull the latest dev version, but it didn't do what I thought it would. Will make a new PR if you are happy.

[R5dan]

yf.set_network(session=X, proxy=Y)
# which passes directly through to YfData singleton
YfData._set_session(X)
YfData._set_proxy(Y)

Hadn't thought of this method, I would say this makes it harder to expand it though, and doesn't allow for multiple configs for different queries.

I will remove most of the docstrings