v1.0.7

Edits to tutorials 06 and 07.

v1.0.6

Fixed some exercises in tutorial 03 and 04.

v1.0.5

Full Changelog: v1.0.4...v1.0.5

v1.0.4

Full Changelog: https://github.com/intro-rstats/intRo/commits/v1.0.4