bring back release helper from master branch

tools/release_helper.sh

@@ -7,7 +7,7 b" python -c 'import keyring'"
 python -c 'import twine'
 python -c 'import sphinx'
 python -c 'import sphinx_rtd_theme'
-python -c 'import nose'
+python -c 'import pytest'
 
 
 BLACK=$(tput setaf 1)
@@ -21,6 +21,7 b' WHITE=$(tput setaf 7)'
 NOR=$(tput sgr0)
 
 
+echo "Will use $EDITOR to edit files when necessary"
 echo -n "PREV_RELEASE (X.y.z) [$PREV_RELEASE]: "
 read input
 PREV_RELEASE=${input:-$PREV_RELEASE}
@@ -38,18 +39,40 b' ask_section(){'
     echo
     echo $BLUE"$1"$NOR 
     echo -n $GREEN"Press Enter to continue, S to skip: "$NOR
-    read -n1 value
-    echo 
-    if [ -z $value ] || [ $value = 'y' ]  ; then
+    if [ "$ZSH_NAME" = "zsh" ] ; then
+        read -k1 value
+        value=${value%$'\n'}
+    else
+       read -n1 value
+    fi
+    if [ -z "$value" ] || [ $value = 'y' ]; then
         return 0
     fi
     return 1
 }
 
 
+maybe_edit(){
+    echo
+    echo $BLUE"$1"$NOR 
+    echo -n $GREEN"Press e to Edit $1, any other keys to skip: "$NOR
+    if [ "$ZSH_NAME" = "zsh" ] ; then
+        read -k1 value
+        value=${value%$'\n'}
+    else
+       read -n1 value
+    fi
+
+    echo 
+    if [ $value = 'e' ]  ; then
+        $EDITOR $1
+    fi
+}
+
+
 
 echo 
-if ask_section "Updating what's new with informations from docs/source/whatsnew/pr"
+if ask_section "Updating what's new with information from docs/source/whatsnew/pr"
 then
     python tools/update_whatsnew.py
 
@@ -100,6 +123,11 b' echo "Cleaning repository"'
 git clean -xfdi
 
 echo $GREEN"please update version number in ${RED}IPython/core/release.py${NOR} , Do not commit yet – we'll do it later."$NOR
+echo $GREEN"I tried ${RED}sed -i bkp -e '/Uncomment/s/^# //g' IPython/core/release.py${NOR}"
+sed -i bkp -e '/Uncomment/s/^# //g' IPython/core/release.py
+rm IPython/core/release.pybkp
+git diff | cat
+maybe_edit IPython/core/release.py
 
 echo $GREEN"Press enter to continue"$NOR
 read
@@ -142,7 +170,14 b' then'
    
    
    echo $GREEN"please update version number and back to .dev in ${RED}IPython/core/release.py"
+   echo $GREEN"I tried ${RED}sed -i bkp -e '/Uncomment/s/^/# /g' IPython/core/release.py${NOR}"
+   sed -i bkp -e '/Uncomment/s/^/# /g' IPython/core/release.py
+   rm IPython/core/release.pybkp
+   git diff | cat
+   echo $GREEN"Please bump ${RED}the minor version number${NOR}"
+   maybe_edit IPython/core/release.py
    echo ${BLUE}"Do not commit yet – we'll do it later."$NOR
+
    
    echo $GREEN"Press enter to continue"$NOR
    read