Implement Freeform Table from Reports API

[randyzwitch]

Supersedes #11

The reports endpoint is described here: https://github.com/AdobeDocs/analytics-2.0-apis/blob/master/reporting-guide.md https://github.com/AdobeDocs/analytics-2.0-apis/blob/master/reporting-multiple-breakdowns.md

How to set up debugger: https://github.com/AdobeDocs/analytics-2.0-apis/blob/master/reporting-tricks.md

In general, it seems that multiple breakdowns requires walking over a set of reports, which is undesirable in a language like R. Will need to decide how to make separate functions for types of reports (time-series, ranked, etc.)

• [x] anomaly detection, includePercentChange as kwarg
• [x] anomaly detection, includePercentChange custom parsing for data frame
• [ ] auto-sort based on presence of daterange in dimension and/or anomalyDetection = TRUE
• [ ] create globalFilters kwarg
• [ ] create globalFilters function (validate if all filters have same structure)
• [ ] refactor globalFilters
• [ ] locale function
• [ ] search function
• [ ] evaluate remaining settings
• [ ] statistics function
• [ ] metricContainer: evaluate all
• [ ] rowContainer
• [ ] anchorDate
• [ ] remaining input assertions

[randyzwitch]

Misc notes:

• globalFilters is a required field and must have a dateRange filter
• pagination seems to stop at 50; need to set limit and page through the settings object
• response for single metric and dimension returns "value" as column name for dimension and "data" for metric
• only 1 dimension allowed; to get multiple dimensions, need to loop and make multiple requests
• anomaly detection added in settings object: "includeAnomalyDetection":true
• "Hours and minutes are required in dateRange. Valid format is yyyy-MM-dd'T'HH:mm:ss/yyyy-MM-dd'T'hh:MM:ss",
• sort = 'asc' required for anomaly/percent change. sorted is awkward if not a timeseries
• includeLatLong=TRUE in settings works as-is, can be made a flag
• reflectRequest=TRUE in settings doesn't seem to do anything