Remove experimental status of MHTP functions and structures (pyfaust/matfaust).

wrapper/matlab/+matfaust/+fact/hierarchical_mhtp.m

-% experimental block start
 %==========================================================================
 %> @brief Runs the MHTP-PALM4MSA hierarchical factorization algorithm on the matrix M.
 %>
@@ -35,4 +34,3 @@ function  [F,lambda] = hierarchical_mhtp(M, hierarchical_p, mhtp_p, varargin)
 	hierarchical_p.use_MHTP = mhtp_p;
 	[F, lambda] = matfaust.fact.hierarchical(M, hierarchical_p, varargin{:}, 'backend', 2020);
 end
-% experimental block end

wrapper/matlab/+matfaust/+fact/palm4msa_mhtp.m

-% experimental block start
 %==========================================================================
 %> @brief Runs the MHTP-PALM4MSA algorithm to factorize the matrix M.
 %>
@@ -39,4 +38,3 @@ function  [F,lambda] = palm4msa_mhtp(M, palm4msa_p, mhtp_p, varargin)
 	palm4msa_p.use_MHTP = mhtp_p;
 	[F, lambda] = matfaust.fact.palm4msa(M, palm4msa_p, 'backend', 2020, varargin{:});
 end
-% experimental block end

wrapper/matlab/+matfaust/+factparams/@MHTPParams/MHTPParams.m

-% experimental block start
 % =========================================================
 %> @brief This class defines the set of parameters to run the MHTP-PAL4MSA algorithm.
 %>
@@ -79,4 +78,3 @@ classdef MHTPParams
 		end
 	end
 end
-% experimental block end

wrapper/python/pyfaust/fact.py

@@ -485,7 +485,6 @@ def palm4msa(M, p, ret_lambda=False, backend=2016, on_gpu=False):
     else:
         return F
 
-# experimental block start
 def palm4msa_mhtp(M, palm4msa_p, mhtp_p, ret_lambda=False, on_gpu=False):
     """ Runs the MHTP-PALM4MSA algorithm to factorize the matrix M.
 
@@ -578,7 +577,6 @@ def hierarchical_mhtp(M, hierar_p, mhtp_p, ret_lambda=False, ret_params=False,
     return hierarchical(M, hierar_p, ret_lambda=False, ret_params=False, backend=2020,
                         on_gpu=False)
 
-# experimental block end
 
 # experimental block start
 def _palm4msa_fgft(Lap, p, ret_lambda=False):

wrapper/python/pyfaust/factparams.py

@@ -703,7 +703,6 @@ class ConstraintList(object):
         """
         return self.clist.__getitem__(ind)
 
-# experimental block start
 class MHTPParams:
     """
     This class defines the set of parameters to run the MHTP-PAL4MSA algorithm.
@@ -759,7 +758,6 @@ class MHTPParams:
                 "palm4msa_period: "+str(self.palm4msa_period)+"\r\n"+
                 "updating_lambda: " +str(self.updating_lambda)+"\r\n")
 
-# experimental block end
 
 class ParamsFact(ABC):
     """