Version 0.16
- fix issue due to usage of own auxiliary file
- new commands
\XSIMatbegindocument
and\XSIMatenddocument
(related to usage of own aux file) - new commands
\xprintexercise
,\xprintsolution
,\xsimprint
, and\xsimxprint
- new example
texsx-498299
(multiple choice questions and solutions)