mdmerge 1.1.1

Use placeholders in markdown files to include other markdown, text or source files.

1.0.0

• Initial version.

1.0.0+1

• pub.dev analysis

1.1.0

• Placeholder pattern changed
• Placeholder handling for Dart files with code block

1.1.0+1

• README update

1.1.1

• NEWLINE fix