Release 4.0.0

Features

• Added BGV scheme (PR 283). Thanks, Alibaba Gemini Lab!
• Added a new example "BGV basics" to native and dotnet.
• Loading objects serialized by Microsoft SEAL v3.4+ are supported.
• Updated versions of dependencies: GoogleTest from 1.10.0 to 1.11.0 and GoogleBenchmark from 1.5.2 to 1.6.0.

Other Fixes

• Fixed an ambiguous comment (PR 375).

Major API Changes

• Added seal::scheme_type::bgv.
• Added a new public method parms_id() (native) to the class EncryptionParameters.
• Added a new public method Create(...) (native and dotnet) with three inputs in the class CoeffModulus.
• Added a new public method correction_factor() (native) or CorrectionFactor() (dotnet) to the class Ciphertext.
• Removed the friendship of the class EncryptionParameters to the class SEALContext.

File Changes

• native/bench/bgv.cpp is added.
• Examples are renamed and extended.