Create tool to plot simple irradiation histories

[anu1217]

This tool plots irradiation histories from an ALARA output file using a bar chart/square wave-like representation. Currently, it works for a simulation containing a single/top schedule with an arbitrary number of levels and an arbitrary number of pulse history blocks. In order to facilitate discussion of the tool's design and structure thus far, I decided to incorporate sub-schedules in a different PR.

This tool is currently able to plot an irradiation history consisting of a single-level schedule and single-level pulse history. I'd like to see how well this design works for this purpose before adding capabilities to process & plot more complex histories.

addresses #205

[gonuke]

This appears to have some overlap with #240... I think it makes sense to resolve #240 first and then add the plotting... unless I'm missing something?

[anu1217]

This appears to have some overlap with #240... I think it makes sense to resolve #240 first and then add the plotting... unless I'm missing something?

That's true -- I just happened to start working on this one first. Will move this to draft for now.

[gonuke]

Can you generate some examples and include both the code to do that and the output as part of the PR?

[anu1217]

I've added plots using two of the sample problems. Also made some changes to the post processor in order to handle verbose output that might appear between the schedule and pulse history details.