Version 0.7.4

This one came a little slower than I wanted, because off-grid movement turned out to be significantly trickier than I thought it would be. Also, there was a week-long heat wave that reduced me to a puddle of ooze.

The main goal for this update was to add new movement options. These include the new off-grid movement options, but also a number of more generic options. These include random movement (you can set bounds to the random movements), moving towards an object's location, taking a single step towards an object's location, as well as turning clockwise, counter-clockwise, and randomly. 

I also made a number of bug fixes and did some code changes that should speed up the game a bit.

Up next, I take a break from writing code, and instead start writing tutorials.