v0.923

Notes for 0.923 release:

A new function "rearrange_and_copy()" was added to the tensor and tensor_grid classes for several kinds of tensor rearrangements.

A new matrix_view_transpose class and a new wordexp() function were created.

The classes cloud_file, boson_rel, eos_had_skyrme, eos_tov_buchdahl, fermion_deriv_rel, fermion_eff, fermion_nonrel, fermion_rel, eos_had_rmf, hist, interpm_krige, and interp_krige_optim classes were improved improved. The particle calibration routines were improved.

The constants were updated for the CODATA 2014 release.

Several updates were made to acol. The handling of tensor and tensor_grid classes was improved. Vector and value specifications were added. The help text was reworked. The autocorr command was improved.

A new class slack_messenger was created to send messages to Slack.