docs: update vimdoc and changelog

Author: A7Lavinraj

CHANGELOG.md

@@ -1,5 +1,14 @@
 # CHANGELOG
 
+## v4.2.0 (2025-04-17)
+- Implement builtin select picker
+- Implement help for key mappings
+- Implement plugins actions to make flexible key mappings
+- Better editing tests properties
+- Fix neovim freezing on compilation
+- Remove `action-bar`
+- Change tests display format
+
 ## v4.1.0 (2025-02-27)
 - Add TCPListener configuration option
 - Unbind existing TCPListener before binding new

doc/assistant.txt

@@ -12,7 +12,6 @@ Using |lazy.nvim| plugin manager:
 >lua
   {
     "A7Lavinraj/assistant.nvim",
-    dependencies = { "folke/snacks.nvim" }, -- Optional but recommended
     lazy = false, -- Start TCP listener on Neovim startup
     keys = {
       { "<leader>a", "<cmd>Assistant<cr>", desc = "Assistant.nvim" }
@@ -28,6 +27,7 @@ Using |lazy.nvim| plugin manager:
 
 >lua
   {
+    mappings = { ... },
     commands = {
       python = {
         extension = "py",