* Changed name for _log function to _msg, added bail() function.

* Created _ansi function library to set terminal properties like
  cursor position and text color.
* Created _if function library, a set of simple if statements.
  Added _if_array_contains, _if_is_integer, _if_is defined,
  if_has_value

test/test-if.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+source "../lib/if.sh"
+
+echo "_if_array_contains test started"
+for result in 2 2 0 1; do
+    echo "Exit code should be ${result}"
+    eArray=(aa ab 0 dsa 2)
+    i=${result}
+    _if_array_contains "${i}" "${eArray[@]}"
+    echo $?
+done
+echo "_if_array_contains test ended"
+
+echo "_if_is_integer test started"
+for result in 0 1; do
+    echo "Exit code should be ${result}"
+    if [ ${result} == 0 ]; then 
+        i=0
+    else
+        i=a
+    fi
+    _if_is_integer ${i}
+    echo $?
+done
+echo "_if_is_integer test ended"