## -------------------------------------------------------------------------
## data.table + dplyr code now lives in dtplyr.
## Please library(dtplyr)!
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## 
## Attaching package: 'dplyr'
## The following objects are masked from 'package:data.table':
## 
##     between, last
## The following objects are masked from 'package:stats':
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##     filter, lag
## The following objects are masked from 'package:base':
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##     intersect, setdiff, setequal, union
## 
## Attaching package: 'purrr'
## The following objects are masked from 'package:dplyr':
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##     contains, order_by
## The following object is masked from 'package:data.table':
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##     transpose
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## Attaching package: 'lubridate'
## The following objects are masked from 'package:data.table':
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##     hour, mday, month, quarter, wday, week, yday, year
## The following object is masked from 'package:base':
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##     date
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## Attaching package: 'scales'
## The following object is masked from 'package:purrr':
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##     discard
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## Attaching package: 'gridExtra'
## The following object is masked from 'package:dplyr':
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##     combine
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