Changelog of @hackage/xlsx 0.1.0.4

0.1.0.4 * fixed generated xml so it gets read by MS Excel with no warnings (thanks Dmitriy Nikitinskiy nick@linux-i294.site) * improved shared strings collection by using Vector (thanks Dmitriy Nikitinskiy nick@linux-i294.site) * empty xml elements don't get emmitted anymore (thanks Philipp Hausmann ph_git@314.ch) * imporoved and cleaned up core.xml generation 0.1.0.3 * added "str" cells content extraction as text * added a notice that formulas in are not yet supported 0.1.0 * better tests and documentation * lenses for worksheets/cells * removed streaming support as it needs better API and improved implementaion * removed CellLocalTime as ambiguous, added CellBool 0.0.1 * initial release