Release v2.0.0

This major release brings support for new features added in IEC Edition 1.0 of
the OSDP specification and other bug fixes and API changes.

Enhancements:

• pytest: Add test coverage in pytest
• sc: Fix API inconsistency in compute_session_keys()
• libosdp: Deprecate ad-hoc unit testing
• libosdp: Document members of struct osdp and struct osdp_pd
• pyosdp: Add support for file transfer command
• CP: Add public method to get PD ID and capability
• Tiny-AES: Update source files to latest version
• libosdp: Add support for MbedTLS
• libosdp: Cleanup error handling between phy and CP/PD
• Deprecate Master key based key derivation
• Add support for OSDP File Transfer
• Advertise and decode peer_size capability
• Add support for CMD_ABORT, CMD_ACURXSIZE, CMD_KEEPACTIVE
• Add support for additional baud rates 19200 and 230400

Fixes:

• libosdp: Change API to handle any number PDs in get_(sc_)status_mask
• libosdp: Double SC timeout to be a bit more flexible
• PD: Fix bug when phy wants wait for more data by PD discards rx_buf
• PD: Fix packet trace logging of sent bytes
• libosdp: USE_SCBK-D has a higher precedence in choice of SCBK
• file_tx: Many fixes and enhancements
• libosdp: Fix slab_free() assertion bug in release builds
• SC: Fix SCBK clobber in osdp_compute_session_keys()
• libosdp: Discard Secure Channel if a KEYSET is ACKed in plaintext
• CP: Fix packet consumption from rx_buffer issue
• cp: Allow applications to KEYSET with SCBK or master_key
• Fix: Allow keyset with SCBK; guard master_key route with ENFORCE_SECURE
• Ignore reply packet coming from another PD.
• Fix the master key check in osdp_cp_setup()