Nex3z FlowLayout Versions Save

• Skip child view layout beyond flMaxRows.

• Migrate to AndroidX.

• Added getRowCount() method.

• Add flMinChildSpacing to control minimum child spacing when flChildSpacing is set to "auto".
• Fix child spacing calculation for the last row.

• Update build tools and dependencies.

• Add flMaxRows attribute for setting the maximum height of FlowLayout in terms of number of rows. Thanks to #5 by @ohmerhe.
• Prefixed attributes with fl.

Fixes #3, counting error when there are child views with visibility set to GONE.

• Fix measure issue when measure specification mode is MeasureSpec.UNSPECIFIED.

• Add right to left layout support.