Fixed a couple of bugs and added a minor feature.
File Info
Standard Keyness, Standard Keyness Multiple Comparison on the imported word list did not run due to the lack of total frequency column
Added an option to recognize the total column in Import Word List
Visualization
maptools package cannot be installed (due to its deprecated status); CasualConc uses pointLabel function, which is now a part of Car package, on some of the graph drawing tools