0.2.25

Fix GC marking

0.2.16

[flamegraph.pl] Update to latest version
Add option to ignore GC frames
Handle source code not being available
Freeze strings in report.rb
Use a cursor object instead of array slicing
ArgumentError on interval <1 or >1m
fix variable name.
Fix default mode comment in readme

0.2.15

Mark the metadata object before the GC is invoked to prevent it from being garbage collected.