Squashed 'modules/pmi/' changes from b7980dfc91..a27956e7de

a27956e7de Revert to codecov v3 for now, v4 appears unavailable
3b789d5000 Use latest actions
82dfcb4537 Drop PMI1 text

git-subtree-dir: modules/pmi
git-subtree-split: a27956e7de811e1c975a68c01190e28e500c5b8f

modules/pmi/.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: Setup conda and dependencies

modules/pmi/doc/resolution.md

@@ -18,9 +18,8 @@ a bead for every 10 residues, while resolution 1 uses a bead for each residue.
 An all-atom representation is assigned a resolution of 0.
 
 Many PMI functions take a `resolution` parameter to specify which resolution
-to act on. These functions use IMP::pmi::tools::HierarchyDatabase to get
-the closest resolution if the exact resolution requested is not available.
+to act on. These functions will use the closest resolution if the exact
+resolution requested is not available.
 
-@note currently resolution is stored in the particle name. Ultimately it
-is intended to use the IMP::atom::Representation decorator for this purpose
-instead.
+@note Internally, the IMP::atom::Representation decorator is used to keep track
+of all system representations at the desired resolutions.