Please see the closed PRs at https://github.com/pwntester/ysoserial.net/pulls?q=is%3Apr+is%3Aclosed for more information on what has been fixed or updated so far.
What's Changed
bug fix + a few changes to existing modules by @irsdl in https://github.com/pwntester/ysoserial.net/pull/93
bug fixing + readme update by @irsdl in https://github.com/pwntester/ysoserial.net/pull/95
readme update by @irsdl in https://github.com/pwntester/ysoserial.net/pull/96
Add ToolboxItemContainer Bridge Gadget by @Frycos in https://github.com/pwntester/ysoserial.net/pull/97
Update SerializersHelper.cs by @irsdl in https://github.com/pwntester/ysoserial.net/pull/98
Add installation guide by @shelld3v in https://github.com/pwntester/ysoserial.net/pull/100
Typo fix: "poayloads" to "payloads" by @the-emmon in https://github.com/pwntester/ysoserial.net/pull/106
fix bug of xaml for SharePoint CVE-2019-0604 by @Y4er in https://github.com/pwntester/ysoserial.net/pull/107
Add ClaimsPrincipal and modify TypeConfuseDelegate by @testanull in https://github.com/pwntester/ysoserial.net/pull/110
Update DotNetNuke README to reflect actual output by @martinvw in https://github.com/pwntester/ysoserial.net/pull/112
Add IsolateApps supports by @RicterZ in https://github.com/pwntester/ysoserial.net/pull/113
Add ObjRef gadget by @mwulftange in https://github.com/pwntester/ysoserial.net/pull/115
Add dataset type spoofing by @testanull in https://github.com/pwntester/ysoserial.net/pull/120
Update README.md by @irsdl in https://github.com/pwntester/ysoserial.net/pull/123
update by @irsdl in https://github.com/pwntester/ysoserial.net/pull/124
url encode feature + save to file by @irsdl in https://github.com/pwntester/ysoserial.net/pull/125
New Contributors
@Frycos made their first contribution in https://github.com/pwntester/ysoserial.net/pull/97
@shelld3v made their first contribution in https://github.com/pwntester/ysoserial.net/pull/100
@the-emmon made their first contribution in https://github.com/pwntester/ysoserial.net/pull/106
@Y4er made their first contribution in https://github.com/pwntester/ysoserial.net/pull/107
@testanull made their first contribution in https://github.com/pwntester/ysoserial.net/pull/110
@martinvw made their first contribution in https://github.com/pwntester/ysoserial.net/pull/112
@RicterZ made their first contribution in https://github.com/pwntester/ysoserial.net/pull/113
Full Changelog: https://github.com/pwntester/ysoserial.net/compare/v1.34...v1.35