move DefaultRepository into own file; add todo tags;

internal/data/FileDatastore.go

@@ -7,13 +7,13 @@ import (
     "encoding/json"
 )
 
+
 // A very simple datastructure, implementing the IDatastore interface. It uses
 // a simple text file to the data as json.
 type FileDatastore struct {
     path string
 }
 
-
 // Creates a new FileDatastore object, creating the storage file in the
 // process.
 func NewFileDatastore(path string) (*FileDatastore, error) {
@@ -120,7 +120,6 @@ func (fds *FileDatastore) GetAllKeys() (map[string]bool, error) {
 // Deletes the entry with the given key. May through an error if the file
 // cannot be opened or the contents cannot be decoded or encoded correctly.
 func (fds *FileDatastore) Delete(key string) error {
-
     m, err := fds.readMapObj()
     if err != nil { return err }