Add some additional metrics to CSV output

[michaelclarkcuadrado]

Hello!

At your discretion and convenience please merge the following changes:

• Bump version to 0.5.
• Add log's filename, unique plot ID, and per-phase/total CPU utilization to CSV output.
• Default to only providing tmpdir1, or if tmpdir2 exists, tmpdir2.

Two tmpdirs are rarely used in practice and are only recommended for phase 1/2 in ramdisk, which is unlikely on contemporary hardware (200+ GB of ram necessary per plot).

[Pengor]

Thanks for the PR, I'll look this over and likely merge next week, I'm away from my PC this weekend 🌞

[Pengor]

Changes are acceptable if the following are addressed:

• Add back Temp dir 1 & Temp dir 2 (not everyone will use both but some might and it's simple to remove a column of data from the final .csv file if you don't care about it).
• Filename (in main.cpp) and Log Filename (in README.md) headings should have the same name for consistency (I would prefer Log filename for consistency with case used by other headings).

Thanks!

[Pengor]

Finished the requested changes out myself, thanks for helping improve the project @michaelclarkcuadrado!