Bump dependencies, bugfixes, expand the descriptions a bit

tests.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+
+
+for app in examples/* ; do
+    if [ $app != "examples/null-app" ] ; then
+        OUT=$(cargo run -q --bin "$( basename "$app" )" -- --number 10 --no-such-flag 2> /dev/null)
+        if [ $? -eq 0 ]
+        then
+           echo "Check if parser accepts unexpected flags"
+           echo "$app produced\n$OUT"
+        fi
+    fi
+done
+
+for app in examples/* ; do
+    if [ $app != "examples/null-app" ] ; then
+        OUT=$( cargo run -q --bin "$( basename "$app" )" -- --number=10 2>&1 )
+        if [ $? -ne 0 ]
+        then
+           echo "Check if --arg=val is accepted"
+           echo "$app produced\n$OUT"
+        fi
+    fi
+done
+
+for app in examples/* ; do
+    if [ $app != "examples/null-app" ] ; then
+        OUT=$( cargo run -q --bin "$( basename "$app" )" -- -hh 2>&1 )
+        if [ $? -ne 0 ]
+        then
+           echo "Check if -hh is accepted"
+           echo "$app produced\n$OUT"
+        fi
+    fi
+done
+
+for app in examples/* ; do
+    if [ $app != "examples/null-app" ] ; then
+        OUT=$( cargo run -q --bin "$( basename "$app" )" -- --number 9000 --number 9001 2>&1 )
+        if [ $? -eq 0 ]
+        then
+           echo "Check if duplicate flags are accepted"
+           echo "$app produced\n$OUT"
+        fi
+    fi
+done
+
+
+
+for app in examples/* ; do
+    if [ $app != "examples/null-app" ] ; then
+        OUT=$( cargo run -q --bin "$( basename "$app" )" -- --number 9000000000000000000000 2>&1 )
+        if [ $? -eq 0 ]
+        then
+           echo "Try to feed invalid numbers"
+           echo "$app produced\n$OUT"
+        fi
+    fi
+done