basic transclusion support
update Xcode
fix include
tweak
make transclusion cross-platform
fix memory errors; still leaks in has_metadata
fix memory issues
this will be 4.5
Merge branch 'transclusion' of ../mmd4-public into transclusion
tweak -h output; update makefile
Merge branch 'master' into transclusion

Conflicts:
	Makefile
update README
Merge branch 'master' of ntkb.dyndns.org:/Users/Shared/gitarchives/mmd4-experimental
Merge branch 'master' into transclusion

Conflicts:
	Makefile
Merge branch 'transclusion' of ntkb.dyndns.org:/Users/Shared/gitarchives/mmd4-experimental into transclusion

Conflicts:
	Makefile
Merge branch 'master' of https://github.com/fletcher/MultiMarkdown-4

Conflicts:
	README.md
Merge branch 'master' into transclusion
Merge branch 'master' of https://github.com/fletcher/MultiMarkdown-4
Merge branch 'master' into transclusion
Merge branch 'master' of https://github.com/fletcher/MultiMarkdown-4