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 * Added doxygen comments to more of daqd_stream.hh
 * Added a mechanism to generate pybind11 doc strings from the doxygen comments and import them into the python module

Rework the shared memory header to allow runtime block count/lookback selection.

Closes #3

See merge request !4

 * Move to 0.4.0
 * Rework some dependencies to hide internal library dependencies better.

 * updated daqd_stream_srv
 * added an api to check the safe lookback on a client

 * Changes the header, to align with the advligorts shared headers
 * removes the fixed size blocks array, replaced with variable sized logic
 * Still need to allow the user to specify the desired lookback.
 * Needs some code cleanup.

the test_load program can create many threads with large requests to check the load on daqd_stream_server and the daqd_stream_cxx library.

 * mbuf hasn't been directly used by daqd-stream-server for a while.

 * export the update_plan method of the client object.

 * still needs automated testing.
 * all good status = 0x0
 * partial data |= 0x2

 * Allow to specify 16Hz data or 1s data tests
   * To allow work on 1s tests w/o duplicating absolutely everything.
 * updated tests to match

Work on handling channel list changes and improving support for data disappearing.

See merge request !3

 * Can now handle a channel being removed and reinstated
   * A mechanism has been added on global crc config
     changes to check all channels that have been
     moved into dcu 0.
 * Updated tests

 * zero's data when the status is 0xbad or 0x2000
 * passes tests

 * current tests pass
 * missing channels are moved to dcu 0, channels in reconfigured dcus get their offset refreshed.

Does not handle:
 * zeroing the data for anything in dcu 0
 * checking for channel list changes for items put in dcu 0

 * Syntax error fix in internal.hh
 * Clear the flag requesting a meta data reload after meta data reloads.

 * Not working yet.

 * Fix the test to read metadata from the right source.
 * Don't adjust the status of a dcu if it is marked 0xbad (missing)

 * Added an intergration test that simulates a dcu dropping out and returning.
   * Needs more work, works fine when all the bits are run manually, but not when run in the test .py.
 * Adding logic to handle channel list changes, reporting that a plan needs to be redone.

 * This is the 'server' side change needed to support changing channel lists, not the client/data plan side.
 * Reformatted source as well.

 * drop channel.h and daqmap.h
 * temporarily incorporate the crc and params/ini parsing code as this is not the interface that we want to use for this.
 * bring the requirements down to the structure layout definitions.

 * mbuf and shmem files
   No longer needed as this code no longer directly opens them.

Testing

See merge request !2

 * less magic numbers.

 * Correct the argument name and descriptions with recent pub/sub changes.

 * Note it is presently impossible to consume the data from a local mbuf.