Add purescript-python to 'Alternate Backends' (#294)

Author: epost

ecosystem/Alternate-backends.md

@@ -9,14 +9,15 @@ There are various alternatives to `psc`'s default JavaScript backend:
 
 ## Alpha Quality
 
-| source code                                                                             | PS version | Target        | 
-|:----------------------------------------------------------------------------------------|:-----------|:--------------|
-| [andyarvanitis/purescript-clojure](https://github.com/andyarvanitis/purescript-clojure) |            | Clojure (JVM) |
-| [csicar/pskt](https://github.com/csicar/pskt)                                           |            | Kotlin        |
-| [pure-c/pure-c](https://github.com/pure-c/pure-c)                                       |            | C (Clang)     |
-| [epost/psc-query](https://github.com/epost/psc-query)                                   | 0.11.7     | Datalog       |
-| [tfausak/thran](https://github.com/tfausak/thran)                                       | 0.11.6     | Haskell (GHC) |
-| [paulyoung/pureswift](https://github.com/paulyoung/pureswift)                           |            | Swift         |
+| source code                                                                                   | PS version | Target        | 
+|:----------------------------------------------------------------------------------------------|:-----------|:--------------|
+| [andyarvanitis/purescript-clojure](https://github.com/andyarvanitis/purescript-clojure)       |            | Clojure (JVM) |
+| [csicar/pskt](https://github.com/csicar/pskt)                                                 |            | Kotlin        |
+| [pure-c/pure-c](https://github.com/pure-c/pure-c)                                             |            | C (Clang)     |
+| [purescript-python/purescript-python](https://github.com/purescript-python/purescript-python) | 0.13.x     | Python >= 3.5 |
+| [epost/psc-query](https://github.com/epost/psc-query)                                         | 0.11.7     | Datalog       |
+| [tfausak/thran](https://github.com/tfausak/thran)                                             | 0.11.6     | Haskell (GHC) |
+| [paulyoung/pureswift](https://github.com/paulyoung/pureswift)                                 |            | Swift         |
 
 ## Stale