This update for librecad fixes the following issues:

- CVE-2021-45341: Fixed a buffer overflow vulnerability in LibreCAD allows an attacker to achieve remote code execution via a crafted JWW document [boo#1195105]
- CVE-2021-45342: Fixed a buffer overflow vulnerability in jwwlib in LibreCAD allows an attacker to achieve remote code execution via a crafted JWW document [boo#1195122]

- Strip excess blank fields from librecad.desktop:MimeType [boo#1197664]

Update to 2.2.0-rc3

  * major release
  * DWG imports are more reliable now
  * and a lot more of bugfixes and improvements