Pvapy

- added ability to set structure fields using PvObjects
- fixed issue with setting variant unions using PvObjects
- added automated tests to conda packaging
- conda/pip package dependencies:
- EPICS BASE = 7.0.2.2
- BOOST = 1.70.0
- NUMPY > 1.15

- added dictionary methods to PvObject class: items(), keys(), values()
- fixed build warning for multiple inclusion of build rules
- conda/pip package dependencies:
- EPICS BASE = 7.0.2.2
- BOOST = 1.70.0
- NUMPY > 1.15

- added method for removing all records from PvaServer
- added start/stop methods for PvaServer
- resolved issue with PvaServer record write callbacks hanging if both client
and server are running in the same interpreter
- added support for building local installation of epics/boost/pvapy
- resolved several issues with pip packaging
- conda/pip package dependencies:
- EPICS BASE = 7.0.2.1
- BOOST = 1.69.0
- NUMPY > 1.15

- fixed build issues related to EpicsHostArch script location
- updated code to reflect changes in CA provider
- updated conda build scripts for EPICS 7.0.2

- added ability to set numeric scalar arrays using NumPy arrays directly
- fixed issue with building documentation when multiple versions of python
are present
- introduced support for building pvapy pip packages

- added introspection interface to Channel class
- fixed configuration issue for OSX
- introduced support for building pvapy conda packages
- replaced old (c)sh setup files with new PYTHONPATH-only and and full (PATH,
PYTHONPATH, LD_LIBRARY_PATH) file
- updated doc build so that it uses information in CONFIG_SITE.local; users
are no longer required to configure python-related variables before
building documentation
- fixed issue with accessing NumPy arrays from temporary objects
- fixed issue with RPC service segfaulting while returning result
- fixed issue with RPC service non-interactive mode (listen() method call)
- added version string to the pvaccess module
- added ability to specify timeout for RPC client