You can find a looot such typos in variable names... so fixing them all may take some time... : )
Sometimes fixed version may conflict with something or be backwards incompatible with something.
Why this PR is not together with #125 as it is "one job"? There is possible to put single commit as PR or multiple commits... and ofc in single commit you can change multiple files too : D
Looks like travis found some problems with those changes.
Fixing typo in variable name. It also needs to be changed in intro.h