LTI Support and Deprecation Schedule and security update for potential CSRF threat in v1.0 and v1.1.1

[jozefbriss]

LTI Version		Date of the Last New Certification	Date of the Last Recertification	Market Availability Through*	Comments
1.0	Basic Launch	12/31/2019	12/31/2019	12/31/2020	Deprecated
1.0.1	Basic Launch with Updated Security ***	6/30/2020	6/30/2021	6/30/2022
1.1	Basic Outcomes	12/31/2019	12/31/2019	12/31/2020	Deprecated, and related services**
1.1.1	Minor update to roles	12/31/2019	12/31/2019	12/31/2020	Deprecated
1.1.2	Basic Outcomes with Updated Security ***	06/30/2020	06/30/2021	06/30/2022
1.2	Tool Consumer Profile	12/31/2019	12/31/2019	12/31/2020	Deprecated
1.3	LTI Advantage Core (currently LTI 1.3)	Ongoing	Ongoing	Ongoing	Recommended LTI Version
2.0	Tool Consumer, Proxy and Auto-Registration	12/31/2019	12/31/2019	12/30/2020	Deprecated

* Certifications and recertifications have a minimum 12-month validity period and therefore may be active and valid for up to 12 months after certification.
** Associated LTI services that are also to be deprecated, Deep Linking v1.0, Names and Role Provisioning Service v1.0, Basic Outcomes v1.0.
*** Link to documentation https://www.imsglobal.org/spec/lti/security-update/v1p0