Updated config to match a conversation knut and i had about the relationship between global, site, and integrator configuration
(Will update docs)
Renamed wrapEnabled to wrap
Poor man's caching for calculateTextDimensions, wrapLabel, and breakString (actually makes a huge difference)
Fixed default config clobbering issues
Updated/corrected sequenceDiagram.spec to set the config using mermaidAPI
Enabled freeze on mermaidAPI to protect defaultConfig
