updated gitignore
first batch of files
add some dependencies
basic grid implementation
basic table implementation
basic column
use columns in object_table
allow access to table columns as methods
apply: evaluation within the scope of the table
filtering implementation
access and column assignment
assigning to a view
@R shortcut for making grids
basic grouping
append other tables or grids to a table
concat tables and grids together
perform actions on groups and concatenate results
rename concat and append to stack
aggregate and stack grids and tables too
auto key numbering method