PR: Add support for compiling directories of QtSass

[danbradham]

fixes #18

• Added complex example including imports from subdirectories and partial files
• Simplified watchdog event handler
  • Now we just recompile anytime the source directory changes
  • This is far more reliable and accounts for imports
  • Removes weird logic to work around MacOS fsEvents
• Aligned api compile* names with libsass
• Decided not to modify cli arguments as discussed in CLI - build/watch directory #18 since input works fine for files or directories

I think the compile methods should be aligned closer to libsass in that sass.compile handles strings, files, and directories and delegates to sass.compile_filename and sass.compile_dirname. This pull request lays the foundation to achieve that by renaming compile_and_save to compile_filename and adding the compile_dirname method.

[codecov-io]

Codecov Report

Merging #23 into master will increase coverage by 52.15%.
The diff coverage is 78.48%.

@@             Coverage Diff             @@
##           master      #23       +/-   ##
===========================================
+ Coverage   32.79%   84.95%   +52.15%     
===========================================
  Files           8        8               
  Lines         186      206       +20     
===========================================
+ Hits           61      175      +114     
+ Misses        125       31       -94

Impacted Files	Coverage Δ
qtsass/conformers.py	95.55% <100%> (+17.77%)	⬆️
qtsass/__main__.py	100% <100%> (+100%)	⬆️
qtsass/__init__.py	100% <100%> (ø)	⬆️
qtsass/events.py	50% <33.33%> (+50%)	⬆️
qtsass/api.py	74% <66.66%> (+29.55%)	⬆️
qtsass/cli.py	77.77% <91.3%> (+77.77%)	⬆️
qtsass/importers.py	96.66% <93.75%> (+74.92%)	⬆️
... and 3 more

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[goanpeca]

I think the compile methods should be aligned closer to libsass in that sass.compile handles strings, files, and directories

I understand the feeling but I would prefer to have separate methods for this and not a universal method that does all. or having separate argument?

[danbradham]

Yeah, I'm not very fond of universal methods or flag arguments that modify the behavior of a function drastically. I created issue #24 to track this discussion. I think any change in that regards to the api behavior should occur in a separate pull request.

[danbradham]

Added some cli tests including compiling and watching both examples/dummy.scss and examples/complex.

[goanpeca]

Hi @danbradham this is looking great :-), vert thorough. You happy with the current state, or is there something else you want to work on?

[danbradham]

Thanks, yeah it's looking good to me.