Update semver + import only what is needed

[aminya]

↪️ Pull Request

• Update semver to 7.3.5
• Import only what is needed from semver
• Make parcel and its plugins smaller: reduce the size from ~70KB to ~15KB for each usage

💻 Examples

🚨 Test instructions

The current tests are enough

✔️ PR Todo

• Added/updated unit tests for this change
• Filled out test instructions (In case there aren't any unit tests)
• Included links to related issues/PRs

[height]

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[mischnic]

Flow is failing because the individual functions aren't listed in here:

parcel/flow-typed/npm/semver_v6.2.x.js

Line 4 in a67a5f0

declare module "semver" {

[aminya]

Flow fails again. I am adding it to flow-typed itself here
flow-typed/flow-typed#4073

[aminya]

Unfortunately, Flow doesn't support importing sub-files from a module! This seems like a very large limitation!
flow-typed/flow-typed#4073 (comment)
joarwilk/flowgen#27