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