Flounder - 0.4.3

• [tests] added flounder tests
• [test] added constructor tests
• [flounder] added read-only version number
• [flounder] multiTag flounders now get a default placeholder if not supplied
• [flounder] fixed a bug affecting defaultValues with an index 0
• [version] added src/core/version.js
• [version] added scripts/version_bump.js
• [search] search is now initialized only when it will be used
• [build] added ___isBound to this bound functions for clarity and testing
• [build] improves multiTag support for data that's initially supplied as a string