Merge pull request #315 from hinshun/import-scheme

Support URIs in import decl

Merge pull request #315 from hinshun/import-scheme

Support URIs in import decl

Merge pull request #190 from hinshun/heredoc-space

Trim space when codegening heredoc folds

Merge pull request #124 from hinshun/select-option-func

Allow option funcs to be used from imported

Prepare for public release