Fixed #61 : SheerkaDebugManager: Add get_value()

Fixed #60 : Hash error when ReturnValue is a list of list
Fixed #59 : Implement smart_get()
Fixed #58 : SheerkaPromptCompleter: Cannot parse concept token
Fixed #57 : SheerkaPrompt: Add concept autocompletion
Fixed #56 : automatically backup command
Fixed #54 : I can record execution status
Fixed #53 : ConceptManager: modify_concept fails

utils/auto_completion.md

@@ -0,0 +1,15 @@
+To allow auto completion
+
+ * make sure the following lines are in the _.zshrc_ file
+
+```bash
+fpath=(~/my-completions $fpath)
+autoload -Uz compinit
+compinit
+```
+
+ * create the folder _~/my-completions_
+ * copy the files __sheerka.rebuild_ and __sheerka.reset_ into the folder
+ * restart the shell
+
+ > :warning: **Environment variable SHEERKA_BACKUP_FOLDER must be set**