Update version history for 5.0.2

Release date is subject to change.
Add failing tests to TestBfGetPlane

The input checking logic in bfGetPlane had a bug where x and y were both
tested against the same dimension. This commit should add failing tests for
this issue.
Fix input check validation in  bfGetPlane
Merge pull request #1115 from sbesson/bfgetplane_fix

Fix bfGetPlane tile input check
Fix 5.0.2 release date
Updating Leica LAS AF Lite link
Merge pull request #1125 from hflynn/leica-link

Leica link
Merge pull request #1114 from melissalinkert/version-history

Update version history for 5.0.2