Store the formatted log message, with "{}"s substituted.
Merge pull request #178 from bkuker/slf-message-fix

Fix SLF "{}" substitution in Debug log & Error reports
Replace lake.png with lake.jpg
Merge pull request #179 from plaa/master

Replace lake.png with lake.jpg
Remove FIXME comment since it was addressed by the previous commit which
modified the epsilon to check for equality in y points.

Removed a bunch of vertical whitespace.