Create CHANGELOG.md

[MaxDesiatov]

It's hard to track releases before 0.5.0, where PRs weren't used as much for development. Nevertheless, I think it's a good practice to track changes from now. I've generated it with GitBuddy as gitbuddy changelog --sections.

[github-actions]

Time Change: +14.5ms (0%)

Total Time: 13,343.5ms

ℹ️ View Unchanged

Test name	Duration	Change
Serialization/Write JavaScript number directly	178.5ms	-2ms (1%)
Serialization/Write JavaScript string directly	184.5ms	+1.5ms (0%)
Serialization/Swift Int to JavaScript	4,792ms	-55.5ms (1%)
Serialization/Swift String to JavaScript	4,962.5ms	-20.5ms (0%)
Object heap/Increment and decrement RC	3,226ms	+91ms (2%)

_{performance-action}