New Features

• Updated the dependency Intel HEXL to v1.1.0 (PR 332).
• Integrated more optimizations from Intel HEXL to Microsoft SEAL.
• Intel HEXL now uses Microsoft SEAL's memory pool, so that memory allocation reported by Microsoft SEAL is more accurate.

Bug Fixes

• Fixed typos in comments (PR 328).
• Fixed a bug in DWTHandler (Issue 330).
• Fixed failing tests when SEAL_USE_ZLIB=OFF and SEAL_USE_ZTD=OFF (PR 332).
• Fixed shared library build when SEAL_USE_HEXL=ON (PR 332).
• Added missing const qualifiers to several members of BatchEncoder and Evaluator (PR 334).