BREAKING CHANGE: Date format changed from DD-MM-YYYY-Slug.md to YYYY-MM-DD-Slug.md. See #12 for motivation.

TL;DR: underblog is now much faster thanks to @egregors

• all Post are processing in separate goroutines through the channel (CSP)
• workers limit defines according to Rlimit / 2 if it possible (macOS, Linux), otherwise (Win) just use default limit (100)
• thread-safe append posts

(#8)

Initial release for macOS.