Version 3.1.0 - ndk support (#43)

* Crashpad support

* Update CHANGELOG.md

* Update README.md

* Symbols upload instructions

* Added automatically symbols upload and renamed crashpad_handler to libcrashpad_handler

* Fixed compilation errors on Windows + added support for older version of Untiy IDE

* Improved .meta files - removed different platforms from meta file that might be not supported by every Untiy instance

* Android NDK Updates

Clarifying rename of symbol file extensions to simply .so

* Updated readme and changelog

* Update README.md

* Update CHANGELOG.md

* Update SymbolsUpload.cs (#42)

* Update SymbolsUpload.cs - MAC support

* Dynamic attributes support, Crashpad https support

* Readme + Changelog update

* Libraries update

* Version 3.1.0

* move Symbols upload token to android section

Co-authored-by: jasoncdavis0 <[email protected]>
Co-authored-by: Vincent Lussenburg <[email protected]>

Author: 3 people