Fix issue #36 and #44

This issue was related to Lua not handling coroutines iterators right, the function being recursive generated multiple coroutine iterators and they didn't resume right. The solution is to make the first loop non-recursive and create a secondary loop where the recursive function is called.

src/project.lua

@@ -62,20 +62,25 @@ end
 -- @local
 local _buildFileTree
 _buildFileTree = function(dir)
-  local subDir
+  local subDirs = {}
+
   for file in assert(fs.dir()) do
     if not file:find("^%.git") then
       if fs.is_dir(file) then
-        subDir = {}
-        dir[file] = subDir
-        assert(fs.change_dir(file))
-        _buildFileTree(subDir, file)
-        assert(fs.pop_dir())
+        subDirs[#subDirs + 1] = file
       elseif fs.is_file(file) then
         dir[#dir+1] = file
       end
     end
   end
+
+  for _, path in ipairs(subDirs) do
+    local newDir = {}
+    dir[path] = newDir
+    assert(fs.change_dir(path))
+    _buildFileTree(newDir)
+    assert(fs.pop_dir())
+  end
 end
 
 --- Recursive function to check if file should be excluded based