Implemented .grabhistory function and added to NAMESPACE
Merge branch 'master' into features
Merge branch 'master' into features
First attempt at reapiring grabHistory. Have now improved it so that .ddghistory keeps track of the entire DDG history since ddg.init until the final ddg.save
Fixed .grabhistory. We now have a temporary file that keeps track of the most recent history and a file which keeps track of the entire history
Merge branch 'master' into features
Merge branch 'bug-fixes' into features
Adding NA values
Merge branch 'bug-fixes' into features
Getting rid of warning raised because is.na was called on NULL
Merge branch 'bug-fixes' into features
Another fix attempt. Checking to see if expression is a list
Merge branch 'bug-fixes' into features
Finished implementation of history file