x3.0 Beta Release 1

This is x3.0b1, the first beta release of x3.
Changes between x2.3 and x3 include:

• Allow global statements to be executed after section definitions
  • All sections require a ret operator for them to be considered ended.
• Repeat now takes xpp source code rather then a section branch (like x2.1)
• Add simpleeval integration
• Add if, eval, try, wait, and while

Full Changelog: x2.3r2...c415a6