Particle match & file system & phase space (#11)

* Create file system

* add doc

* add n_sim n_snap directly to paths

* Move things to a single particle reader for consistency

* add docstring

* add srdcir, dumpdir and mmain_path

* make boxunits work with paths

* switch to using paths

* add tempdumpdir

* rm dependence on old functions

* rm comment

* rm unused import

* go back to all imports

* fix import bug

* rm dependence on old functions

* modernize code!

* fix typo

* fix typo

* update fits to new data structureing

* change docs

* add julia repo

* add setup

* add install commands

* ignore install files

* add array flattening

* update dependene

* add positions reader

* update manifest and projects

* add func

* update gitignore

* pos matching progress

* move file

* rm comment

* add velocities getter

* fix bug

* fix name bug

* fix path bug

* fix args func

* add redshift calculation to catalogues

* add shortcut to set n_sim and n_snap

* if cond bug

* add the cosine similarity

* add verbosit iterator

* add docs

* update README

* update README

* update README

README.md

@@ -2,7 +2,7 @@
 
 ## :scroll: Short-term TODO
 - [ ] Find the distribution of particles in the first snapshot
-- [ ] Implement Max's halo matching
+- [ ] Make sure I am not taking halos outside of the well-resolved region.
 - [ ] Implement a custom model for matchin galaxies to halos.
 
 
@@ -13,4 +13,4 @@
 
 
 ## :bulb: Open questions
-- Completeness of clusters. Optical clusters catalogues are a bit of a mess..
+- What scaling of the search region? No reason for it to be a multiple of $R_{200c}$.