Start to integrate Blockly.
Add in some initial Processing.js blocks.
Add in color support to blockly.
Get text values working.
Support global properties. Make text arguments more flexible.
Support events and add in categories.
Add strokeWeight.
Bring in external js-to-blockly library.
Get jsToBlockly integration working.
Trim URLs.
Make the editor full height.
Add more processingJS blocks and dropdown

Test Plan:
- Use them lol
Get code generating for Processing.js methods working.
Add support for Processing global variables and events.
Fix up color handling.
Fix color block typo.
Better handle functions that return a value.
Use regular variable declarations.
Add in localStorage saving and resuming for the test env.
More PJS blocks

Test Plan:
- Use them