[Python] Improve numeric types and string operations (#4294)

* [Python] Improve numeric types and string operations with fast paths and bug fixes

* Update changelogs

Author: dbrattli

src/Fable.Cli/CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * [Python] Fix regression `[<Erase>]` on class types not preventing them from being emitted to Python (by @dbrattli)
 * [Python] Fix regression `%A` format specifier to output booleans as lowercase `true`/`false` (by @dbrattli)
+* [Python] Fix various bugs in fable-library numeric types and string operations (by @dbrattli)
 
 ### Changed
 

src/Fable.Compiler/CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * [Python] Fix regression `[<Erase>]` on class types not preventing them from being emitted to Python (by @dbrattli)
 * [Python] Fix regression `%A` format specifier to output booleans as lowercase `true`/`false` (by @dbrattli)
+* [Python] Fix various bugs in fable-library numeric types and string operations (by @dbrattli)
 
 ### Changed
 

src/fable-library-py/.gitignore

@@ -0,0 +1,2 @@
+# Ignore compiled shared object files
+*.so

src/fable-library-py/Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "fable-library-core"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/fable-compiler/fable"