undraw 1.0.2

A new Flutter package for open source illustrations. These illustrations are designed by Katerina Limpitsouni and the application is developed by westdabestdb.

[1.0.2]

• Add errorWidget: This widget will be displayed when the future completes with an error. The default is a Text with an error message.
• Update the example to show a sample usage of errorWidget.
• Update example/pubspec.yaml to use a relative path of the package. This eliminates the need to update it with every release and allows to test the example app while developing and updating the package.
• Make getSvgString private since its only supposed to be used internally by the package and shouldn't be exposed as a public API.
• Use a constrained dependency for flutter_svg, which is the recommended way. This will increase the package's maintenance score to 100

[1.0.1]

• Example app fix.
• Maintenance.

[1.0.0]

• Initial major release.