Add reverse dependency checks (all look good)

.Rbuildignore

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 ^windows$
 ^a\.out\.dSYM$
 ^NEWS\.md$
+^revdep$

revdep/.gitignore

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+**/

revdep/check.R

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+library("devtools")
+
+res <- revdep_check()
+revdep_check_save_summary(res)
+revdep_check_save_logs(res)

revdep/summary.md

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+# Setup
+
+## Platform
+
+|setting  |value                        |
+|:--------|:----------------------------|
+|version  |R version 3.1.2 (2014-10-31) |
+|system   |x86_64, darwin13.4.0         |
+|ui       |RStudio (0.99.104)           |
+|language |(EN)                         |
+|collate  |en_US.UTF-8                  |
+|tz       |Pacific/Auckland             |
+
+## Packages
+
+|package  |*  |version |date       |source         |
+|:--------|:--|:-------|:----------|:--------------|
+|DBI      |   |0.3.1   |2014-09-24 |CRAN (R 3.1.1) |
+|testthat |   |0.9.1   |2014-10-01 |CRAN (R 3.1.1) |
+
+# Check results
+10 checked out of 10 dependencies 
+
+## Causata (4.2-0)
+Maintainer: Justin Hemann <justinh@causata.com>
+
+```
+checking top-level files ... NOTE
+Non-standard file/directory found at top level:
+  ‘integration_tests’
+```
+```
+checking R code for possible problems ... NOTE
+GetMetadata.Connect: no visible global function definition for
+  ‘dbGetQuery’
+GetRawData.Connect: no visible global function definition for
+  ‘dbGetQuery’
+```
+```
+checking Rd cross-references ... WARNING
+Missing link or links in documentation object 'Connect.Rd':
+  ‘RMySQL’
+
+See the information in section 'Cross-references' of the 'Writing R
+Extensions' manual.
+
+```
+```
+checking files in ‘vignettes’ ... NOTE
+The following files look like leftovers/mistakes:
+  ‘Causata-vignette.log’
+Please remove them from your package.
+```
+
+## compendiumdb (0.1.0)
+Maintainer: Umesh Nandal <u.k.nandal@amc.uva.nl>
+
+```
+checking package dependencies ... NOTE
+Packages suggested but not available for checking:
+  ‘inSilicoDb’ ‘hgu133a.db’ ‘GSVA’ ‘GSVAdata’
+```
+
+## db.r (0.1.3)
+Maintainer: Greg Lamp <greg@yhathq.com>  
+Bug reports: https://github.com/yhat/db.r/issues
+
+```
+checking package dependencies ... NOTE
+Package suggested but not available for checking: ‘RPostgreSQL’
+```
+
+## dbConnect (1.0)
+Maintainer: Dason Kurkiewicz <dasonk@iastate.edu>
+
+```
+checking package dependencies ... ERROR
+Package required but not available: ‘gWidgets’
+
+Package suggested but not available for checking: ‘gWidgetsRGtk2’
+
+See the information on DESCRIPTION files in the chapter ‘Creating R
+packages’ of the ‘Writing R Extensions’ manual.
+```
+
+## dplyr (0.3.0.2)
+Maintainer: Hadley Wickham <hadley@rstudio.com>  
+Bug reports: https://github.com/hadley/dplyr/issues
+
+```
+checking package dependencies ... NOTE
+Packages suggested but not available for checking:
+  ‘RSQLite.extfuns’ ‘RPostgreSQL’
+```
+```
+checking dependencies in R code ... NOTE
+Namespace in Imports field not imported from: ‘R6’
+  All declared Imports should be used.
+See the information on DESCRIPTION files in the chapter ‘Creating R
+packages’ of the ‘Writing R Extensions’ manual.
+```
+```
+checking examples ... ERROR
+Running examples in ‘dplyr-Ex.R’ failed
+The error most likely occurred in:
+
+> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
+> ### Name: src_mysql
+> ### Title: Connect to mysql/mariadb.
+> ### Aliases: src_mysql tbl.src_mysql
+> 
+> ### ** Examples
+> 
+> ## Not run: 
+> ##D # Connection basics ---------------------------------------------------------
+> ##D # To connect to a database first create a src:
+> ##D my_db <- src_mysql(host = "blah.com", user = "hadley",
+> ##D   password = "pass")
+> ##D # Then reference a tbl within that src
+> ##D my_tbl <- tbl(my_db, "my_table")
+> ## End(Not run)
+> 
+> # Here we'll use the Lahman database: to create your own local copy,
+> # create a local database called "lahman", or tell lahman_mysql() how to
+> # a database that you can write to
+> 
+> if (!has_lahman("postgres") && has_lahman("mysql")) {
++ # Methods -------------------------------------------------------------------
++ batting <- tbl(lahman_mysql(), "Batting")
++ dim(batting)
++ colnames(batting)
++ head(batting)
++ 
++ # Data manipulation verbs ---------------------------------------------------
++ filter(batting, yearID > 2005, G > 130)
++ select(batting, playerID:lgID)
++ arrange(batting, playerID, desc(yearID))
++ summarise(batting, G = mean(G), n = n())
++ mutate(batting, rbi2 = 1.0 * R / AB)
++ 
++ # note that all operations are lazy: they don't do anything until you
++ # request the data, either by `print()`ing it (which shows the first ten
++ # rows), by looking at the `head()`, or `collect()` the results locally.
++ 
++ system.time(recent <- filter(batting, yearID > 2010))
++ system.time(collect(recent))
++ 
++ # Group by operations -------------------------------------------------------
++ # To perform operations by group, create a grouped object with group_by
++ players <- group_by(batting, playerID)
++ group_size(players)
++ 
++ # MySQL doesn't support windowed functions, which means that only
++ # grouped summaries are really useful:
++ summarise(players, mean_g = mean(G), best_ab = max(AB))
++ 
++ # When you group by multiple level, each summarise peels off one level
++ per_year <- group_by(batting, playerID, yearID)
++ stints <- summarise(per_year, stints = max(stint))
++ filter(ungroup(stints), stints > 3)
++ summarise(stints, max(stints))
++ 
++ # Joins ---------------------------------------------------------------------
++ player_info <- select(tbl(lahman_mysql(), "Master"), playerID,
++   birthYear)
++ hof <- select(filter(tbl(lahman_mysql(), "HallOfFame"), inducted == "Y"),
++  playerID, votedBy, category)
++ 
++ # Match players and their hall of fame data
++ inner_join(player_info, hof)
++ # Keep all players, match hof data where available
++ left_join(player_info, hof)
++ # Find only players in hof
++ semi_join(player_info, hof)
++ # Find players not in hof
++ anti_join(player_info, hof)
++ 
++ # Arbitrary SQL -------------------------------------------------------------
++ # You can also provide sql as is, using the sql function:
++ batting2008 <- tbl(lahman_mysql(),
++   sql("SELECT * FROM Batting WHERE YearID = 2008"))
++ batting2008
++ }
+Loading required package: RPostgreSQL
+Warning in library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE,  :
+  there is no package called ‘RPostgreSQL’
+Loading required package: RMySQL
+Loading required package: DBI
+Error: select is not a character vector
+Execution halted
+```
+
+## ProjectTemplate (0.6)
+Maintainer: Kirill Mueller <krlmlr+r@mailbox.org>  
+Bug reports: https://github.com/johnmyleswhite/ProjectTemplate/issues
+
+```
+checking package dependencies ... NOTE
+Packages suggested but not available for checking: ‘RODBC’ ‘RPostgreSQL’
+```
+```
+checking dependencies in R code ... NOTE
+No Java runtime present, requesting install.
+See the information on DESCRIPTION files in the chapter ‘Creating R
+packages’ of the ‘Writing R Extensions’ manual.
+```
+
+## quantmod (0.4-3)
+Maintainer: Joshua M. Ulrich <josh.m.ulrich@gmail.com>
+
+```
+checking R code for possible problems ... NOTE
+Found the following calls to attach():
+File ‘quantmod/R/attachSymbols.R’:
+  attach(NULL, pos = pos, name = DB$name)
+  attach(NULL, pos = pos, name = DB$name)
+See section ‘Good practice’ in ‘?attach’.
+```
+
+## sqldf (0.4-10)
+Maintainer: G. Grothendieck <ggrothendieck@gmail.com>  
+Bug reports: http://groups.google.com/group/sqldf
+
+```
+checking package dependencies ... NOTE
+Package suggested but not available for checking: ‘RPostgreSQL’
+```
+
+## TSMySQL (2013.9-1)
+Maintainer: Paul Gilbert <pgilbert.ttv9z@ncf.ca>
+
+```
+checking package dependencies ... ERROR
+Package required but not available: ‘TSsql’
+
+See the information on DESCRIPTION files in the chapter ‘Creating R
+packages’ of the ‘Writing R Extensions’ manual.
+```
+
+## TSsql (2014.4-1)
+Maintainer: Paul Gilbert <pgilbert.ttv9z@ncf.ca>
+
+```
+checking R code for possible problems ... NOTE
+TSgetSQL: no visible global function definition for ‘as.zoo’
+TSgetSQL: no visible global function definition for ‘zoo’
+TSgetSQL: no visible global function definition for
+  ‘changeTSrepresentation’
+TSquery: no visible global function definition for ‘zoo’
+```
+