Various FDSTools-wide enhancements
* Unknown arguments are now silently ignored. If this results in the tool not being able to run, the usage information of the tool is printed instead of the general fdstools usage. * Seqconvert no longer crashes on an empty line in the input. * Libconvert now maintains the order of prefix/suffix sequences. * Allele names with aliases other than 'X' or 'Y' are now correctly recognised. These were previously rejected as 'unknown format'. * Fixed bug where a prefix/suffix other than the first listed in the library file was sometimes used as the canonical sequence. * Sequence format conversion from raw to TSSV-style sequences now attempts to match the prefix, suffix, and STR pattern to non-matching sequences on a best effort basis. This is especially useful when converting to allelenames (which is done via TSSV-style sequences), since it results in an allele name that matches more closely the names of other alleles. * Generating allele names for sequences that lack a prefix and/or suffix is now supported (by adding a variant description that deletes the entire prefix/suffix).