Update ReleaseNotes.md

Add TryGetValue (#142)

Co-authored-by: Tom Almroth <TAlmroth@loandepot.com>

task: release notes

docs: Update release notes

tests: refactor tests RegisterPostEvictionCallback

task: fix absolute expiration when set using timespans

Credit to @Meberem and @Sinhk
- fixes #84
- fixes #100
- closes #117
- closes #85

docs: release notes

bug: if you change the type of the item in the cache the old item sho…

…uld get eveicted

fixes #46

task: update some test dependencies

bug: testresult trx file missing failing build