v0.39: Objection!

Koan Changes:

Add Position property name to [Koan()] constructor attribute on all koan files for clarity.
New Koans!
- AboutCompareObject
- AboutForEachObject
- AboutGroupObject
- AboutNewObject
- AboutSelectObject
- AboutSortObject
- AboutTeeObject
- AboutWhereObject
- AboutMeasureObject
Updated Koans!
- AboutGetHelpAndGetMember -> AboutDiscovery
  - Added a koan to give an example of searching for commands by parameter names.
  - Now with Get-Command koans as well!
- AboutLoopsAndPipelines fixed (thanks @rdbartram !)
- AboutStringOperators fixed several derps (thanks @rdbartram !)
New Challenge Koan: AboutTheStockChallenge - thanks be to @ChrisMarinos of the F# koans for the puzzle there! (Designing appropriate puzzles is hard, OK?)

Split out module functions into separate files.
- For the time being, just dot-sourcing the functions. We don't have a lot, and there's little to be gained by combining them into a single file.
Build/Test/Deploy on PS Core to ensure compatibility.
Perform module installations before executing build scripts.
Edit build scripts for consistency and style.
- Use Write-Information for build display output to avoid cluttering output, should that ever be needed for anything.
Updated readme with TOC, slightly better layout.
MODULE TESTS!
- After several attempts to get tests going for the module functions (mostly by other people, really),we finally have pretty thorough module tests!
- All module functions are covered and tested thoroughly at commit time! (We have like three functions, so it's not a big deal tbh.)

Fixed derp in the meditation prompt display where it was looking for a file in the wrong place.

Change search-help-by-parameters koan into simple help tip. It made the meditation prompt far too slow.