Update dependencies (#162)

Author: Anton Fediushin

source/ddox/entities.d

@@ -547,6 +547,7 @@ struct CachedType {
 
 	static CachedType fromTypeDecl(Declaration decl)
 	{
+		import std.conv : to;
 		Type tp;
 		tp.kind = TypeKind.Primitive;
 		tp.typeName = decl.qualifiedName.to!string;

source/ddox/htmlgenerator.d

@@ -146,7 +146,7 @@ void generateHtmlDocs(Path dst_path, Package root, GeneratorSettings settings =
 		import vibe.stream.memory;
 		assert(filename.startsWith(dst_path));
 
-		auto str = new MemoryOutputStream;
+		auto str = createMemoryOutputStream();
 		del(str);
 		auto h = md5Of(str.data).toHexString.idup;
 		auto relfilename = filename[dst_path.length .. $].toString();

source/ddox/htmlserver.d

@@ -195,7 +195,7 @@ void registerApiDocs(URLRouter router, Package pack, GeneratorSettings settings
 		if (!symbols_js.length) {
 			import std.digest.md;
 			import vibe.stream.memory;
-			auto os = new MemoryOutputStream;
+			auto os = createMemoryOutputStream;
 			generateSymbolsJS(os, pack, settings, ent => linkTo(ent, 0));
 			symbols_js = cast(string)os.data;
 			symbols_js_md5 = '"' ~ md5Of(symbols_js).toHexString().idup ~ '"';
@@ -230,6 +230,7 @@ void registerApiDocs(URLRouter router, Package pack, GeneratorSettings settings
 private void searchEntries(R)(ref R dst, Entity root_ent, string[] search_terms) {
 	bool[DocGroup] known_groups;
 	void searchRec(Entity ent) {
+		import std.conv : to;
 		if ((!ent.docGroup || ent.docGroup !in known_groups) && matchesSearch(ent.qualifiedName.to!string, search_terms)) // FIXME: avoid GC allocations
 			dst.put(ent);
 		known_groups[ent.docGroup] = true;