Tune babel browsers config

[a-x-]

last 2 version is a well-known anti-pattern. What about ['>2%', 'last 2 Chrome versions', 'last 1 Safari version']?

[a-x-]

https://jamie.build/last-2-versions

[a-x-]

I'll follow jamie's recommendation:

{
"browsers": [
  ">0.25%",
  "not ie 11",
  "not op_mini all"
]
}

[a-x-]

📦 0.7.3-0