Release 0.12.2

"Changes:

[das#843] Add support to MorkDB in Query Agent main
[das#824] Integration of LCA in Hyperon Experimental
[das#825] Create separate commands for LCA and Evolution in Hyperon Experimental
[das#859] Strength formulae for Equivalence/Implication links are generating > 1.0 values
[das#795] Update Python Client for new bus element
[das#796] Database Adapter must communicate with AtomDB over the bus using AtomDBProxy
[das#822] Add support to MorkDB in das-cli
[das#823] Implement a command to set a single parameter
[das#819] Add a flag to tell agents' binaries to use MorkDB
[das#828] Implement a Jupyter notebook to show how to setup DAS environment
[das#829] Implement a Jupyter notebook to explain how Query Evolution works
[das#832] Write a conceptual document explaining how DAS components work
[das#830] Implement a Jupyter notebook to show how to use LCA
[das#835] Update main repo README
[das#864] Notebook explaining LCA usage
[das#860] Fix strength formulae for equivalence/implication links
[das#858] DAS conceptual documentation
[das#872] Set LCA queries to Camel Case
[das#844] Added a cmd line parameter to use MorkDB in Query Agent
[das#845] HE Client v0.4.0
[das#850] Add missing atoms when using MeTTa template
[das#852] Add MorkDB::query_for_targets()
[das#856] Use default das-cli config values on tests.
[das#867] Setup QEMU for cross-platform Docker image builds in CI
[das#871] Use push_back in PortPool::return_port()"