Updated text to point to MAEC 4.1/CybOX 2.1
Updated copyright year
Updated README with latest version and library info
Adds minor changes for consistency
Updates copyright year
Removed extraneous MAECNamespaceParser import
Merge branch 'maec4.1_update' of github.com:MAECProject/threatexpert-to-maec into maec4.1_update
ID generator-related updates
Removed redundant line in top-level comments
Updates for consistency
Removed authorship
Merge branch 'maec4.1_update' of github.com:MAECProject/threatexpert-to-maec into maec4.1_update
Merge pull request #1 from MAECProject/maec4.1_update

Updates for MAEC 4.1