Closes #5 split ae into ae_ophtha and ae.

[manciniedoardo]

Closes #5

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[kaz462]

@manciniedoardo I found an example where AELAT/AELOC are not used for eyes:

from: https://www.cdisc.org/standards/foundational/sdtmig/sdtmig-v3-3/html

My concern is that the package will get larger easily with multiply copies of the same domain for different TAs, unless there is a real need for splitting, I feel one copy of the AE is enough for this case - adding two location variables to ae. what do you think?

[manciniedoardo]

@manciniedoardo I found an example where AELAT/AELOC are not used for eyes: from: https://www.cdisc.org/standards/foundational/sdtmig/sdtmig-v3-3/html

My concern is that the package will get larger easily with multiply copies of the same domain for different TAs, unless there is a real need for splitting, I feel one copy of the AE is enough for this case - adding two location variables to ae. what do you think?

@kaz462 Happy to go with your judgement here. In actual fact we don't use the AE dataset in admiralophtha (yet?) so we could get rid of this if you prefer, and just implement it if/when needed.

[kaz462]

discussed with @bundfussr - will split it to be consistent with ex_ophtha

[kaz462]

@manciniedoardo Thanks for working on this!