**BUG**
Concise problem statement:
Following on from bug report:
https://easyeda.com/bbs_view_1968.htm
it has been discovered that after saving the schematic and reopening it, the tilde character `~` has been stripped out of the text netlist in the schematic!
Steps to reproduce bug:
1. Open https://easyeda.com/editor#id=XxqICUAS0
2. Add `~` character where indicated.
3. Save schematic.
4. Close schematic.
5. Reopen schematic.
Results: `~` character has been stripped out of text!
Expected results: Text should be unchanged from save to reopen.
Url:
https://easyeda.com/editor#id=XxqICUAS0
Browser: Chrome, Firefox in Kubuntu 12.04 LTS.