version 0.2.1 beta

New in this release:

• improved table header menu to hide/show columns
• the button to remove the filter on genotypes is disabled if there is no filter to remove
• disabled marker labels appear in a different color (grey)
• minor performance improvements

fixed:

• an issue in which haptic feedback would not always be triggered when editing a genotype
• an issue in which vertical scrolling would not be registered when the cursor is over the top ruler and swiping between markers is allowed.