Implemented 'with' and 'set_vars' commands. Added 'execute' function for triggers. Changed 'move' command so that variables can be used in attributes.
Added test games for the 'move' and 'with' commands, along with a public domain sprite by Tirinity from DeviantArt.
Fixed: 'with' command took all descendend 'when' element instead of just the direct children.
Commands 'show' and 'hide' now take variables in their attributes.
Enforcing default value to be string in out.tools.getParsedAttribute() and changed out.tools.replaceVariables() to issue a console output when its input is not of type string.
Added test game for show & hide commands.
Changed deploy.js script to put the files into the new bin/ directory. Changed tests and index.html to use the version in the bin/ directory instead of the old one in the release directory (which is not checked in!).
Added a LICENSE.txt file and changed README.md to not include the license text and have a section for contributors.
Fixed: contributors in README.md should have been a list.
Removed references to old release directory from deploy.js script.
Added missing JSHint global for console in deploy.js.
The deploy.js script now removes license and JSHint global comments (or anything else that you put between /*<ON_DEPLOY_REMOVE*/ and /*</ON_DEPLOY_REMOVE>*/ markers).
Changed deploy.js script to produce a minified engine file as well.
Merge remote-tracking branch 'upstream/develop' into develop
<else> tag is supported for <with>
getSceneById() is used at <goto> command

less copypaste, more code reuse!
<with> and <choice> now can be nested

Check out some test samples to get the real power of nesting!
<when>, <else> and <option> now can contain just the same tags as
<scene> itself!
Interpreter stack is used for managing nesting, note that it is pop'd
when scene is actually changed.
fix of var replacement at <var> and better sample for nested <with>
Merge pull request #19 from lolbot-iichan/develop

Nesting of with/when/choice/option. Added 'else' to 'with' command. Merged from lolbot-iichan. Thanks for contributing!