0.9.0

eeptools 0.9

This is a major update including removing little used functions and renaming
and restructuring functions.

New Functionality

• A new package vignette is now included
• nth_max function for finding the nth highest value in a vector
• retained_calc now accepts user specified values for sid and grade
• destring function deprecated and renamed to makenum to better reflect the
  use of the function
• crosstabs function exported to allow the user to generate the data behind
  crosstabplot but not draw the plot

Deprecated

• dropbox_source deprecated, use the rdrop2 package
• plotForWord function deprecated in favor of packages like knitr and rmarkdown
• mapmerge2 has been deprecated in favor of a tested mapmerge
• mosaictabs.labels has been deprecated in favor of crosstabplot

Bug Fixes

• nsims in gelmansim was renamed to n.sims to align with the arm package
• Fixed bug in retained_calc where user specified sid resulted in wrong
  ids being returned
• Inserted a meaningful error in age_calc when the enddate is before the date
  of birth
• Fixed issue with age_calc which lead to wrong fraction of age during leap
  years
• lag_data now can do leads and lags and includes proper error messages
• fix major bugs for statamode including faulty default to method and returning
  objects of the wrong class
• add unit tests and continuous integration support for better package updating
• fix behavior of max_mis in cases when it is passed an empty vector or a
  vector of NA
• leading_zero function made robust to negative values
• added NA handling options to cutoff and thresh
• Codebase is now tested with lintr to improve readability