Release 4.1.0 (2022/01/26)

• introduced PVA server mirror class
• added distributor plugin for the PVA server
• restricted numpy version to >= 1.22, as these versions resolve issues with boost python segfaults
• introduced PVAPY_EPICS_LOG_LEVEL environment variable to control logging in the epics PVA libraries; allowed log levels correspond to pvAccess library logger: 0 (all messages) to 7 (no messages; default)
• added command line utilities:
  • pvapy-mirror-server
  • pvapy-ad-sim-detector
• conda/pip package dependencies:
  • EPICS BASE = 7.0.6.1
  • BOOST = 1.78.0
  • NUMPY >= 1.22