Version 9.0.0

[dgaubert]

Breaking changes:

• Remove /version endpoint.

Announcements:

• Upgrades major windshaft release version windshaft@6.0.0
• Fix test where http-fallback-image renderer was failing quietly
• Fix stat named map providers cache count
• Use new signature for onTileErrorStrategy. Required by windshaft@6.0.0
• Extract onTileErrorStrategy to a module
• In tests, stop using mapnik module exposed by windshaft and require it from development dependencies
• Stop using MapStore from windshaft while testing and create a custom one instead
• Rename NamedMapProviderReporter by NamedMapProviderCacheReporter
• Remove bootstrapFonts at process startup (now done in windshaft@6.0.0)
• Stop checking the installed version of some dependencies while testing