Stack folder for XCode Instruments.
Merge pull request #6 from schani/master

Stack folder for XCode Instruments
Change Neelakanth Nadgir's blog post url from sun to oracle
Add options for tunables. Add more tunables. Commify sample count.
Optimize flow anlysis (~25% faster). Report count of skipped lines, if any.

Using dumbench (https://metacpan.org/module/Dumbbench) to run flamegraph
on a file with ~140,000 lines:
old: Rounded run time per iteration: 3.472e+00 +/- 1.7e-02 (0.5%)
new: Rounded run time per iteration: 2.618e+00 +/- 1.3e-02 (0.5%)
Merge pull request #7 from xrmx/master

Fix Neelakanth Nadgir's blog post reference
Merge pull request #9 from timbunce/options

Add options for tunables. Add more tunables. Commify sample count.
Merge pull request #10 from timbunce/optimize

Optimize flow analysis (~25% faster). Report count of skipped lines, if any.
Use <g> to simplify SVG and fix styling. Add name attribute file mechanism.

Place rect and text into a g block.
Replace the duplicated rect and text onmouseover with a single g onmouseover.
This reduces the size of the SVG file. It also fixes the loss of the
black border when mousing over the text.

An external file can be used to specify attributes for individual
functions. So, for example, functions can be given links and colors.
default target=_top else links will open within SVG <object>
Merge pull request #11 from timbunce/linking

Use <g> to simplify SVG and fix styling. Make functions clickable etc.
allow floating point values
round to decimal on output
Merge pull request #12 from timbunce/float

Allow floating point values
fix to allow decimals again
Merge pull request #13 from timbunce/float

fix to allow decimals again
Add --total option to enable visualization of time spent not within a sub.
Merge pull request #14 from timbunce/timemax

Add --total option to enable visualization of time spent not within a sub
Fix bug in --nameattr handling
Avoid problems with "--" in func names by using ";" as internal delimeter

We know ";" is safe because it's the primary input delimiter.