Sublime Text syntax: Change root scope name to be markup.ink rather t…

…han source.ink, so that it doesn't use hanging indents by default

Audit protection level of members in StoryState, and make Story's sta…

…te field public, so game has access to Json serialisation and visit count method.

build_release.command now properly names the windows/linux build

Oops, need to include Newtonsoft JSON dll in the mac release too. Twe…

…aked documentation.

Oops, fix an error than still referenced "~ include" syntax and updat…

…e documentation

Error messages for incorrect arguments to ink fallbacks already kinda…

… worked. Not perfect, but serviceable.

Merge branch 'downloadable-binaries'