Deprecations and Proposed Deprecations In Mandel Software

For deprecations prior to the release of Mandel 3.0 please see https://github.com/EOSIO/eos/issues/7597.

Significant notable deprecations in Mandel software

Feature	Date of Deprecation Notice	Deprecation Announcement Link	Date of Removal	Removal Version	Alternative to Consider
history_plugin	2018/08/14	v1.2.0	-	v3.1.0	state_history_plugin
mongo_db_plugin	2019/04/29	v1.8.0-rc1	-	v3.1.0	state_history_plugin
wabt	2019/04/29	-	-	v3.0.0	EOS VM (default in 3.0+)
macOS support	-	-	-	v3.0.0	TBA (may be reintroduced in future)
cleos wast output	-	-	-	TBA	Use external tooling (wabt etc)

Significant notable proposed deprecations

These proposed deprecations are seeking feedback from users

• Require producer authority ("BP key") to be a single K1 key for each produce
• remove direct YubiHSM support; replace with generic HSM support