Feat armmac (#42)

* added realization explorer notebook
* ldflags for meson-armmac problems
* realization notebook
* more words on the variogram notebook
* added hyper par explore to variogram notebook - yikes
* trying arm gha runners
* more arm testing
* fix in quadtree test files for float iconvert -only showing up a mac for some reason
* another picky mf6 int/float casting issue only on mac...
* [pre-commit.ci] auto fixes from pre-commit.com hooks
* Fix unused variable
* Expand logic for adding -ld_classic flag, if present and not deprecated

---------

Co-authored-by: Mike Taves <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-13, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         python-version: ["3.9", "3.13"]  # run lower and upper versions
 
     steps:

examples/freyberg_monthly/sfr.obs_continuous_sfr.csv.txt

@@ -1,3 +1,3 @@
   headwater  sfr  headwater
   tailwater  sfr  tailwater
-  gage_1  inflow  120.0
+  gage_1  inflow  120