Update fingerprints + add default spec version
* Adds fingerprints for Chrome 75, iOS 12.1, and Firefox 65(=Firefox 63)
* If min/max tls versions are not explicitly specified in the ClientHelloSpec,
uTLS will try to parse versions from SupportedVersions extension,
and fallback to [TLS 1.0, TLS 1.2] if SupportedVersions is absent.
* Adds mimicked FakeRecordSizeLimitExtension and FakeCertCompressionAlgsExtension
to be used instead of GenericExtension{} for clarity and extensibility
(we are ready to use those with Firefox and Chrome fps with correct values
whenever actual functionality is implemented)
* SetTLSVers: parse the right extensions + cosmetics
- Uses a chacha20-based CSPRNG to generate randomized fingeprints
- Refactors generation of randomized fingerprints, removing many redundant shuffle functions.
- Adds Seed field to ClientHelloID
- ClientHelloID.Version is now a string (was uint16)
I tested all fingerprints and confirmed that Chrome and Firefox are
working as intended.
Android fingerprints were grossly unpopular, which could a result of
incorrect merge, but either way we'll remove them for now.
