Import compatibility, export delimiter & quotation fixes
Bugfixes:
- Strip byte order mark from Strings when importing so they don't become part of imported content's cells.
See #97 for discussion. (#103) -- @lardieri - Respect alternate delimiters when serializing the CSV.
See #102 for discussion. (#107) -- @lardieri - Escape any double-quotes embedded inside the field values when serializing the CSV.
See #111 for discussion. -- @lardieri