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• Replace println with log macros
• Use Rust 2018
• Use pom 3.0

• Allow xref section has zero entries, fixes #39
• Dictionary key type changed to Vec<u8>, fixes #42
• Move image dependency to embed_image feature

• Insert image on page.
• Able to read stream when it's length is in object stream.

• Use time crate directly, chrono is optional.
• insert_form_object accepts page_id argument.

Add form xobject to page.

• Extract text from specified pages.
• Replace text of specified page.

• Derive Clone for Document and Xref
• Add a dictionary! macro that creates a Dictionary
• Add an Object::string_literal constructor
• Add impl From<_> for Object for more types
• Remove the Seek bound on Document::save_to

• Ignore invalid objects when reading all object in xref table
• Store compressed stream objects and normal objects together
• Minor bug fixes and improvements

Use itoa and dtoa to improve writing performance (by sharazam).