Fix documentation bug
Add rstudio project
Display variable type summary.
Closes #23
Cleanup source_sqlite parent classes
Suppress warnings for ignored optional args.
Because other internal R functions will triggered
Ensure summarise and mutate work with repeated cols.
Fixes #24
Suppress optional arg warnings for other classes
Add group_size function.
Closes #22
Fix buggy test
Make source_dt a data table
Fix bug in printing grouped_dt
Add n function to all grouped sources.
Closes #10
Move tests to new location
Ignore R history
Better data generation system
Check that filter finds vars in local scope
Save db in temporary dir
Rename source to tbl
Update from Rcpp
Update readme with new language