v0.2.0: Reaching 1.0 core features implention
Reaching base architecture for 1.0 release. This includes:
- Restucture code and! config to support multiple verification mechanism
- WIP: experiment / prepare for dns01 challenge support (via dns updates)
- add storage support to not reissue CSRs the same pem, supporting reissue from multiple machines via a once shared key and CSR
- support newer python-acme releases