Qibo 0.1.6-rc1

What's Changed

• Remove TrotterHamiltonian (#426) @stavros11
• Set threads warnings (#443) @stavros11
• Add qibojit backend (#427) @stavros11
• Make qibojit default backend and update warnings (#436) @stavros11
• adding qibojit to CI (#437) @scarrazza
• disabling parallel evaluation on darwin (#438) @scarrazza
• documentation update (#435) @scarrazza
• Set number of threads for qibojit (#434) @stavros11
• Fixes for cupy backend (#432) @stavros11
• Set threshold for using Metropolis custom op (#428) @stavros11
• Hamiltonian expectation using terms (#424) @stavros11
• Tensorflow not installed warning (#425) @stavros11
• icarusq (#422) @scarrazza
• Small Grover change (#421) @igres26
• Fix set_device test for GPU (#417) @stavros11
• updating qibotf docs (#416) @scarrazza
• fixing CI (#420) @scarrazza
• Load custom operators from external library (#398) @stavros11
• adding version checks for backends (#412) @scarrazza
• documentation upgrade (#411) @scarrazza
• Docs improvements (#399) @scarrazza
• removing zpow and czpow gates (#409) @scarrazza
• Complex numbers in sympy Hamiltonians (#410) @stavros11
• Adjusts all tests to new format (#406) @stavros11
• Set test backend in conftest (#407) @stavros11
• Remove matmuleinsum backend (#404) @stavros11
• refactoring for qibotf (#400) @scarrazza
• fixing tests for numpy/qibotf (#403) @scarrazza
• Reuploading fix (#401) @AdrianPerezSalinas
• Falqon (#378) @AdrianPerezSalinas
• Make matrices backend agnostic (#402) @stavros11
• moving distributed circuit into core (#395) @scarrazza
• backends auto-discovery (#394) @scarrazza
• documentation instructions (#393) @scarrazza
• Grover model (#364) @igres26
• Examples grover (#389) @AdrianPerezSalinas