Fix CI software versions (#51)

clang-tidy 11
Sphinx 4.2
Catch 3.5.1
Latest Dragonbox (vendored)

Warnings fixes for newer toolchains
Disabled several clang-tidy checks that either break dragonbox or are buggy

.clang-tidy

@@ -17,15 +17,19 @@ Checks: >-
     -cppcoreguidelines-pro-type-member-init,
     -cppcoreguidelines-pro-type-reinterpret-cast,
     -cppcoreguidelines-pro-type-union-access,
+    -cppcoreguidelines-pro-type-vararg,
     -cppcoreguidelines-owning-memory,
     -modernize-avoid-c-arrays,
-    -modernize-use-trailing-return-type,
     -modernize-raw-string-literal,
+    -modernize-unary-static-assert,
+    -modernize-use-nodiscard,
+    -modernize-use-trailing-return-type,
     -readability-braces-around-statements,
     -readability-convert-member-functions-to-static,
+    -readability-else-after-return,
     -readability-implicit-bool-conversion,
     -readability-magic-numbers,
     -readability-named-parameter,
-    -readability-uppercase-literal-suffix
+    -readability-uppercase-literal-suffix,
 HeaderFilterRegex: nanofmt/.*[.]h
 WarningsAsErrors: "*"

.github/workflows/tidy.yml

@@ -13,18 +13,17 @@ jobs:
     name: Tidy
 
     env:
+      CXX: clang++
       BUILD_TYPE: RELEASE
-      CLANG_TIDY: clang-tidy-10
+      CLANG_TIDY: clang-tidy-11
 
     steps:
     - uses: actions/checkout@v2
 
     - name: Install
-      run: sudo apt-get install -y clang-tidy-10
+      run: sudo apt-get install -y ${{ env.CLANG_TIDY }}
 
     - name: Configure
-      env:
-        CXX: ${{ matrix.compiler }}
       run: cmake -B ${{ github.workspace }}/build -DCMAKE_BUILD_TYPE=${{ matrix.config }} -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=ON
 
     - name: Tidy

cmake/fetch_catch2.cmake

@@ -3,7 +3,7 @@ include(FetchContent)
 FetchContent_Declare(
     Catch2
     GIT_REPOSITORY https://github.com/catchorg/Catch2.git
-    GIT_TAG        v3.0.0-preview3
+    GIT_TAG        v3.5.1
 )
 
 FetchContent_MakeAvailable(Catch2)

docs/conf.py

@@ -57,7 +57,7 @@
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = 'en'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.

docs/requirements.txt

@@ -1,3 +1,3 @@
 docutils==0.16
-sphinx<4.1
+sphinx>=4.2
 sphinx-rtd-theme