V0.12 2014-05-16

• align with handlebars.js 2.0.0-alpha.2
• 64db34c support {{@first}} and {{@last}}
• bfa1fbe add new flag FLAG_SPVARS
• 10a4623 remove json schema support
• 240d9fa only export used LCRun2 functions when compile() with FLAG_STANDALONE now
• 3fa897c rename LCRun2 to LCRun3 for interface changed, old none standalone templates will error with newer version
• e0838c7 now can output debug template map with ANSI color
• 80dbeab fix php warning when compile with custom helper or block custom helper
• 8ce6268 support Handlebars.js style custom helper