Fix bug on equality code generation

Generation of code both for equality and non-equality was using the wrong operator.

Allow calling the screen rendering routine explicitly.

This fixes #41
Merge pull request #44 from haroldo-ok/call-rendering

Fix loop code generators.

The code generators for the repeat N times and repeat while/until blocks were generating JS code instead of bBasic.

Fix a code generation bug when incrementing a variable.

Version 0.10.1 fixes a code generation bug when incrementing a variable.

The block "change 'some variable' by..." was generating incorrect, non-compilable code (ex: Timer = (typeof Timer == 'number' ? Timer : 0) + 1); this version fixes this bug.

Implement support for multiple backgrounds.

This version adds support for multiple backgrounds; now, it is possible to design multiple backgrounds and choose which of them to use.

Implement score support.

This fixes #21 
Merge pull request #33 from haroldo-ok/implement-score

Fix player color bug

Player color selection block wasn't having any effect. This modification corrects that.
This fixes #24 and #11

Now, you can add or remove sprite animation frames.

Merge pull request #23 from haroldo-ok/add-remove-frames

Allow the user to add or remove animation frames.

This fixes #20

Sprite editor.

0.7.0

Implement sprite editor.

Implement background editor.

This fixes #4.