libpgfe v0.3.1

Change log

• Refactored code

libpgfe v0.3.0

Change Log

• Added implementation support for SHAKE (A variant of SHA-3/Kaccak that supports mutable digest length)
• Refactoring
• SequentialData modification
• Makefile modification
• Removed pgfe.h/.c

libpgfe v0.2.1

Change log

1. Optimized implementation of SHA-3/Keccak
2. Migrated to C++14 standard for compatibility consideration
3. Fixed bugs

libpgfe v0.2.0

Change log

1. IMPORTANT: Native implementation of MD5, SHA-1, SHA-2, and SHA-3
2. Interface modifications
3. License update