0.4.1-ios

Patch release for our iOS binary framework.

Features

• Scene filtering now supports px2 for pixel area (#1261)

Refactoring

• Remove unnecessary .plist files from iOS demo app (#1262)

Bug fixes

• Refactor platform code to allow multiple map view instances to run on the same application (#1263)
• Fix text label placement for polygons to render at polygon centroid (#1277)
• Fix GeoJSON parsing for boolean values (#1274)
• Fix signed distance field text rendering for high pixel density (#1259)
• Eat BOM unicode character from scene files (#1268)