Update Description of LRS Action for dupe activit.

As documented in Issue #445
Added "used" - typo
Merge pull request #446 from andyjohnson/master

Update Description of LRS Action for duplicate activities
Update Section 4.1.4.3

Changed requirement language to suggest LRS doesn't validate Statement Object UUIDs.
Merge pull request #6 from adlnet/master

get from adl master
Fixes https://github.com/adlnet/xAPI-Spec/issues/452
Update Section 4.1.4.3

I think I was over-explaining the requirement.  The long and short is that we are asserting the scope of this requirement not be extended to the LRS, I've adjusted the language in accordance with @garemoko's comment
Merge pull request #454 from andyjohnson/master

Update Section 4.1.4.3
Merge pull request #455 from garemoko/204-200

Fixes https://github.com/adlnet/xAPI-Spec/issues/452
Update Appendix A

Update Appendix A with possible value for the mbox_sha1sum
Clarify intent of the `moreInfo` parameter

Adds missing verb in the Activity definition's `moreInfo` parameter to clarify
the intent of the document.
Merge pull request #456 from andyjohnson/master

Update Appendix A
Merge pull request #458 from rjz/master

Clarify intent of the `moreInfo` parameter
Typo in 7.3 Table agent vs. agents

Had a typo in the name
Merge pull request #460 from andyjohnson/master

Typo in 7.3 Table agent vs. agents
Changed stateId parameter to profileId parameter

It looks like the text from the State API was copied into
Agent Profile and Activity Profile
Merge pull request #462 from chrishandorf/master

Changed stateId parameter to profileId parameter
Updated four Appendix references.

Some of the Appendix links are referencing the wrong part of the
Appendix.  One is no longer in the spec.
removed invalid extra comma in JSON

Appendix B#3 (Group) is now valid JSON
fixed indents

Appendix B ex. 4 (Statement) had extra indents