add 2.0 base code
update license headers
optimize TrimLeadingWhitespaces streams
update testcase
add testcase for import option
support inherit context from parent template (default: false)
add #call for invoke tag without no body
update testcase for #include, #call
remove ++/-- syntax
remove ++/-- syntax
remove unused class
remove ++/-- syntax testcase
update testcase base class
update testcase
implements trimDirectiveWhitespaces & trimDirectiveComments
add testcase for custom trimDirectiveComments
move JetTemplateConfig to JetTemplateOption
update error message
update error message
move SINGLE_XXX constants to InterpretContext