Support SVG bitmap form

Features

• Support to decode SVG as bitmap image, for image processing #11
• Fix the issue that sd_imageFormat not been set to .SVG

Drop SVGKit and support iOS 13+ native SVG rendering

Important

For current SVGKit user, we move the SVGKit support into another repo: https://github.com/SDWebImage/SDWebImageSVGKitPlugin

The 1.0.0 version now support iOS 13+/macOS 10.15+, to use the system framework for SVG rendering

The 1.0.0 version also bring the SwiftPM and watchOS support

Supports SVG data export

Feature

• Add support to easy export("encoding") the SVG data of SVGKImage presentation #4

Compatible for SDWebImage 5.0

Project

• Upgrade the SDWebImage dependency to ~> SDWebImage 5.0

Upstream dependency update && Fix Carthage

Fix

• Upgrade the upstream SDWebImage dependency to 5.0.0-beta4.
• Fix the Carthage install module name, which should be just SDWebImageSVGCoder without any suffix.

Initial Release

Feature

• Support using SVGKit's SVGKFastImageView or SVGKLayeredImageView
• Support decoding SVG into SVGKImage custom image instance
• Support decoding SVG into the bitmap representation UIImage/NSImage
• Support a custom out-of-box property to automatically adjust content mode