Load the number of attempts from the XML level file.
Remove a print statement and add a TODO comment.
Create the first level.
Add level 2.

Also, change level 1's name.
Change 'length' to 'height'.
Add level 3.
Add level 4.
Add level 5. This one is fun :p
Add level 6. This one is tricky.
Fix a bug with the 'ball bounces' stat.

Previously, if a ball touches two platforms at the same time, the number
of bounces is incremented by two, not one. This commit fixes that.
Add level 7.
Revert "Fix a bug with the 'ball bounces' stat."

This reverts commit 1891902f0a7dfbd3c2e7f55d2262aed10b3948df.
This fix isn't really good because if the FPS drops down, some
bounces might not be accounted for.
Fix issue #46, which deals with breakable platforms.

A test level with the file name of Bug46.xml is included. It is an
example of a level that was exhibiting the issue.
Add an extra attempt to level 7.
Set the default number of attempts to 3.
Add level 8.

Yes, the '8' for the number of balls is not a typo.
Specify the number of balls for the test level.