Add initial marking:controlled_structure xpath check in best practices validator
Change namespace argument for proper XPath processing. Use better exception style
Merge conflicts
Merge pull request #38 from STIXProject/csxp_bp

Implement best practice validation for Controlled Structure XPath
Implement best practice check for consistent STIX versioning. Fixes #10
Fixes issue #9 by ensuring that idref/timestamp combos are valid, and by detecting all major elements that have IDs but lack timestamps
Add support for --recursive option. Fixes #35
Fix bad quote character
Merge pull request #43 from STIXProject/issue_35

Add support for --recursive option. Fixes #35
Merge pull request #42 from STIXProject/correct_timestamp_usage

Best Practice Validation of Timestamp Usage
Merged origin/master
Merged origin/master
Merge pull request #41 from STIXProject/latest_version_bp

Implement best practice check for consistent STIX versioning. Fixes #10
Merged origin/master