New Formats!
- Added LaTeX table export format (`Dataset.latex`).
- Support for dBase (DBF) files (`Dataset.dbf`).
Improvements
- New import/export interface (`Dataset.export()`, `Dataset.load()`).
- CSV custom delimiter support (`Dataset.export('csv', delimiter='$')`).
- Adding ability to remove duplicates to all rows in a dataset (`Dataset.remove_duplicates()`).
- Added a mechanism to avoid `datetime.datetime` issues when serializing data.
- New `detect_format()` function (mostly for internal use).
- Update the vendored unicodecsv to fix `None` handling.
- Only freeze the headers row, not the headers columns (xls).
Breaking Changes
- `detect()` function removed.
Bugfixes
- Fix XLSX import.
- Bugfix for `Dataset.transpose().transpose()`.