Update version info, improve datum reporting and fix segment behaviour

[rogerfraser]

This pull request introduces:

• New version information (1.2.9)
• Improved UI reporting for datum when importing SINEX files
• Fix to segmentation behaviour when supplying a custom maximum block size

[coveralls]

Pull Request Test Coverage Report for Build 13980751909

Details

• 3 of 6 (50.0%) changed or added relevant lines in 2 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.02%) to 81.163%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
dynadjust/dynadjust/dnasegmentwrapper/dnasegmentwrapper.cpp	1	2	50.0%
dynadjust/dynadjust/dnaimportwrapper/dnaimportwrapper.cpp	2	4	50.0%

Files with Coverage Reduction	New Missed Lines	%
dynadjust/dynadjust/dnaadjustwrapper/dnaadjustprogress.cpp	1	70.05%

Totals
Change from base Build 13849003563:	0.02%
Covered Lines:	32216
Relevant Lines:	39693

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💛 - Coveralls