mod+app: bump Pool version to v0.5.4-alpha, prepare for release 0.6.2

With this commit we update the version of the Pool trader daemon to
v0.5.4-alpha. And we prepare the README for a new release of LiT
v0.6.2-alpha.

Author: guggero

README.md

@@ -70,6 +70,7 @@ Lightning Terminal is backwards compatible with `lnd` back to version v0.13.3-be
 
 | LiT              | LND          |
 |------------------| ------------ |
+| **v0.6.2-alpha** | v0.13.3-beta |
 | **v0.6.1-alpha** | v0.13.3-beta |
 | **v0.6.0-alpha** | v0.13.3-beta |
 | **v0.5.2-alpha** | v0.12.0-beta |
@@ -86,8 +87,9 @@ Lightning Terminal is backwards compatible with `lnd` back to version v0.13.3-be
 
 ## Daemon Versions packaged with LiT
 
-| LiT              | LND          | Loop        | Faraday      | Pool          |
-|------------------| ------------ | ----------- | ------------ |---------------|
+| LiT              | LND          | Loop        | Faraday      | Pool         |
+|------------------| ------------ | ----------- | ------------ |--------------|
+| **v0.6.2-alpha** | v0.14.1-beta | v0.15.1-beta | v0.2.7-alpha | v0.5.4-alpha |
 | **v0.6.1-alpha** | v0.14.1-beta | v0.15.1-beta | v0.2.7-alpha | v0.5.2-alpha |
 | **v0.5.3-alpha** | v0.13.3-beta | v0.14.1-beta | v0.2.6-alpha | v0.5.0-alpha |
 | **v0.5.2-alpha** | v0.13.3-beta | v0.14.1-beta | v0.2.6-alpha | v0.5.0-alpha |