fix: remove archived/GitHub-only packages from Suggests; add MCPanel to Remotes

Remove 5 packages not available on CRAN from Suggests:
- rdbounds (never on CRAN)
- fwildclusterboot (archived 2024-05-29)
- wildrwolf (GitHub only)
- estudy2 (GitHub only)
- processR (GitHub only)

Add MCPanel (used in utils_synthdid.R) to Remotes so pak can install it.
Remove dependencies: hard restriction from CI - now all Suggests are installable.

Author: Mike Nguyen

.github/workflows/R-CMD-check.yaml

@@ -27,7 +27,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
       R_KEEP_PKG_SOURCE: yes
-      _R_CHECK_FORCE_SUGGESTS_: false
+      _R_CHECK_FORCE_SUGGESTS_: 'false'
       _R_CHECK_CRAN_INCOMING_REMOTE_: false
 
     steps:
@@ -45,7 +45,6 @@ jobs:
         with:
           extra-packages: any::rcmdcheck
           needs: check
-          dependencies: '"hard"'
 
       - uses: r-lib/actions/check-r-package@v2
         with:

DESCRIPTION

@@ -34,7 +34,6 @@ Suggests:
     rdpower,
     rdlocrand,
     rdmulti,
-    rdbounds,
     ivreg,
     sensemakr,
     estimatr,
@@ -49,7 +48,6 @@ Suggests:
     WeightIt,
     EValue,
     rbounds,
-    fwildclusterboot,
     ri2,
     bacondecomp,
     staggered,
@@ -64,11 +62,9 @@ Suggests:
     grf,
     Matching,
     sensitivitymv,
-    wildrwolf,
     pak,
     remotes,
     frenchdata,
-    estudy2,
     policytree,
     DoubleML,
     bartCause,
@@ -104,7 +100,6 @@ Suggests:
     broom,
     mgcv,
     blavaan,
-    processR,
     MCPanel
 Config/testthat/edition: 3
 Imports:
@@ -128,5 +123,6 @@ Imports:
     plm (>= 2.6.3),
     MASS
 Remotes:
-    synth-inference/synthdid@70c1ce3eac58e28c30b67435ca377bb48baa9b8a
+    synth-inference/synthdid@70c1ce3eac58e28c30b67435ca377bb48baa9b8a,
+    susanathey/MCPanel
 VignetteBuilder: knitr