influxdbr 0.14.2

New features

• added IQL wrapper for delete

• influx_connection gains new argument curl_options to control http communication (#36)

• influx_write function gets measurement_col argument to enable writing a
  data.frame with multiple measurements with only one function call

Internals

• package dependencies specified for dplyr and purrr (#21, #38, #39)

• new internal helper functions for httr::GET and httr::POST