Support for multiple match_field

[thejoeejoee]

• added support for multiple match_field
• keys of obj_map are now composite; made as tuple of values got by match_field keys
• filter for existing objects is made from OR-ed sequence of Q() objects
• added tests
• solving #5

[codecov-io]

Codecov Report

Merging #6 (91904f8) into master (8158c1e) will increase coverage by 0.12%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master       #6      +/-   ##
==========================================
+ Coverage   98.66%   98.79%   +0.12%     
==========================================
  Files           2        2              
  Lines          75       83       +8     
==========================================
+ Hits           74       82       +8     
  Misses          1        1              

Impacted Files	Coverage Δ
bulk_update_or_create/query.py	98.75% <100.00%> (+0.13%)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 8158c1e...91904f8. Read the comment docs.

[fopina]

hey @thejoeejoee still around? I think I lost track of all notifications in this small project and missed quite a few interesting ones.

Trying to catch up and your PR is quite wanted :) I've opened #19 to do few changes before merging (keeping your original commit for credits!)

Let me know if you around to do them (and keep git/PR history cleaner)

[thejoeejoee]

@fopina no problem, I see a lot of changes in #15 conflicting with this PR -- still, I can make it working, gimme day or two

[fopina]

@thejoeejoee yes, I should've started with yours and work on it instead but if you don't mind it going in #19 (and keeping that commit of yours), I'll go with it in a few as I'm resolving the conflicts at the moment

disclosure: I actually need the feature in a project 🕺

[fopina]

@thejoeejoee pushed resolution on #19 with a bit of refactor already if you care to take a look? rebased by mistake instead of merge so all ended up under your commit

[fopina]

(same) tests on #19 passed with that bit of refactor (plus rebasing).

let me know if you can just reset your local fork with that branch, amend commit and push it here, so your contribution is properly tracked (and my mess/hurry is forgotten - sorry)

I'll merge (either this PR after reset or #19) later today and make a release 🎉

Contribution very much welcome 🙇

[thejoeejoee]

@fopina reset done and force-pushed :heavy_check_mark: thanks for your work on this repository!

[fopina]

thank you. really nice to need a feature on your own package and have it already implemented in a PR!