Merge tag 'v1.4.6' into docs

RPostgres 1.4.6

- Breaking change: `dbListObjects()` only allows `Id()` objects as `prefix` argument (@dpprdan, #390).

- Use `NULL` in favor of `NULL::text` when quoting strings and literals, to support JSON and other text-ish types. Fixes a regression introduced in #370 (#393, #425).

- `dbQuoteLiteral()` correctly quotes 64-bit integers from the bit64 package (of class `"integer64"`) (@karawoo, #435, #436).

- Breaking change: `dbListObjects()` only allows `Id()` objects as `prefix` argument (@dpprdan, #390).

- Windows: update to libpq-15.3 (#442).

- Upgrade boost to 1.81.0-1 to fix sprintf warnings (#417).

- Suppress warning in gcc-12 (#443).

- Tweak driver docs (@dpprdan, #433).

- Relicense as MIT.

- Close result set.

- Replace Rcpp by cpp11 (@Antonov548, #419).

.Rbuildignore

@@ -3,7 +3,6 @@
 ^\.Rproj\.user$
 ^\.travis\.yml$
 ^src/Makevars$
-windows
 ^clion-test\.R$
 ^cran-comments\.md$
 ^src/.*\.d$
@@ -22,3 +21,9 @@ windows
 ^\.deps$
 ^autobrew$
 ^cleanup$
+^CRAN-SUBMISSION$
+^\.gitpod\.yml$
+^\.gitpod\.Dockerfile$
+^CMakeLists\.txt$
+^vscode-install\.r$
+^vscode-.*build$

.github/.gitignore

@@ -0,0 +1,2 @@
+*.html
+/pkg.lock