Neutralised the negative sign of the 15N gyromagnetic ratio in the return_offset_data() method.

This is to match the behaviour of Dmitry Korzhnev's cpmg_fit software.
Small docstring edit for the relaxation dispersion target function __init__() method.
Added keyword dim to frontend function for spectrum.read_spins().

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.

This is associate data with the spins of up to two dimensions.
Implemented system test for reading spins from nmrpipe SeriesTab formatted file.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Extended reading of spin residue names from NMRPipe SeriesTab formatted file.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Modified NMRPipe SeriesTab to read residue numbers and name for two-dimensional list.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Insert check if spin already exist, before creating it.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Fix for proper spacing and comments in GUI test.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Issuing a warning instead of error when loading spins from sparky list where residue names are not present.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Issued a warning instead of error, when loadning spin residue names from a NMRPipe SeriesTab formatted file.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Removed name from docstring in GUI test.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Added name to Copyrights header of modified files.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Changed to use return_spin for testing presence of spin.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Implemented another system test for reading NMRPipe SeriesTab files.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Fix for issuing a warning in reading spins from a NMRPipe SeriesTab formatted file.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Fix for issuing a warning when reading spins from a sparky formatted file.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Implemented system test for reading spin ID's from NMRView formatted file.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Made reading of NMRView formatted file return the residue number as integer instead of string.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Fix for calling the warn() function.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.
Extended the error description for reading NMRView files.

Work in progress for Support Request #3044, (https://gna.org/support/index.php?3044) - Load spins from SPARKY list.