- MCTS:

- spdlog's default logger is multi-threaded so remove unnecessary debug logs protections

- add custom mutexes for time reporting and random generator calls

- add node garbage on action progression

- RIW:

- spdlog's default logger is multi-threaded so remove unnecessary debug logs protections

- add custom mutexes for time reporting and random generator calls

- A* and AO*:

- _goal_checker called only once when expanding the state

- AO*:

- catch exception of python solver's get_next_action() and get_utility()

- LRTDP and LAO*:

- check SSP?

- MARTDP:

- parallel agent searches

ALL:

- add watchdogs

- get_utility() returns Value() instead of double

- replace solved or goal message from root node in solve() with the LRTDP's one

- examples:

- check order of domain and state in all C++-based solver lambdas

- add all compatible algorithms to grid_multisolve (for instance A* is missing)

- add domain factory argument in C++-based solvers in all examples