Version bump to 2.3.5

Fixed version in project configuration

Release 2.3.3 (techprimate#260)

* Added object tags
* Fixed equality patterns
* Added Hashable and Equatable
* Fixed project setup
* Updated SwiftPM dependencies
* Added PDFContext for encapsulated rendering
* Fixed build of unit tests
* Fixed deployment versions
* CI build destination bump
* Fixed external document inserting empty page when debugging
* Fixed total page count calculations with external documents
* Fixed module maps
* Fixed linting setup
* Fixed carthage compilation in Xcode 12
* Added more integration test cases for merging multiple external documents and total page count calculation
* Removed empty pages between batching external documents
* Updated changelog, added 2.3.3
* Fixed usage description
* Version bump to 2.3.3

techprimate#254: Release 2.3.

Release/2.3.1 (techprimate#227)

* Added macOS compatibility to tests (techprimate#224)
* Fixed missing file ref
* techprimate#225: Fixing incorrect US page size (techprimate#226)
Corrected the usLetter page height and usLedger page width to reflect 11inx72dpi
* Fixed missing file ref
* Updated changelog

Co-authored-by: Sami Khoury <[email protected]>

Merge branch 'develop'

Release/2.2.0 (techprimate#218)

* Added more macOS support

Merge pull request techprimate#215 from techprimate/release/2.1.2

Release/2.1.2

Merge pull request techprimate#213 from techprimate/release/2.1.1

Release/2.1.1

Merge pull request techprimate#212 from techprimate/release/2.1.0

Release/2.1.0