Kill defunct import.
Kill IntColumn and FloatColumn. Closes #64.
Don't 'double-cast' Decimal values.
Optimize compute. Eliminate defunct deps. Closes #60.
Better errors when columns don't exist. Closes #96.
Rename outliers methods. Closes #99. Closes #100.
Validate table init args. Closes #38.
Update CHANGELOG.
Implement Table.find. Closes #14.
Implemented TextColumn.max_length.
Implemented BooleanColumn. Closes #6.
Getting latest; resolving conflicts.