First version of report

+#!/bin/zsh
+
+source $0:A:h/datetimehelper.sh
+source $0:A:h/taskhelper.sh
+source $0:A:h/ttyhelper.sh
+
+function tasksallsince() {
+    [[ $# -lt 1 ]] && return 1
+    local DATE=$1
+    shift
+    taskuuids \( \( \( +COMPLETED or +DELETED \) end.after:$DATE \) or \
+        +PENDING \) $@
+}
+
+function datetimedescription() {
+    for UUID in $(tasksallsince 2018-03-31)
+    do
+        DESCRIPTION="$(taskdescription $UUID)"
+        PROJECT="$(taskproject $UUID)"
+        for T in $(tasktimes $UUID)
+        do
+            extracttime $T
+            printf "%s;%s;%s;%s\n" $TIMEKEY $TIME $PROJECT $DESCRIPTION
+        done
+    done
+}
+
+function report() {
+    for LINE in "${(f)$(datetimedescription|sort -t\; -k1)}"
+    do
+        set -- ${(s(;))LINE}
+        if [[ $DATE != $1 ]]
+        then
+            DATE=$1
+            printf "%s\n" $(underline "" $DATE)
+        fi
+        printf "%s [%s] - %s\n" $(bold "" $2) $3 $4
+    done
+}
+
+function usage() {
+    local USAGE=$(cat <<-USAGE 
+    Usage: %s [-?] [DATETIME] [FILTER] 
+	
+	OPTIONS: 
+	  -?, --help    Show this help 
+	
+	FILTER can be additional taskwarriors filters to limit the result 
+	any further. 
+	DATETIME is a date and time identifier as accepted by the date command.
+	It specifies how long back done tasks should be considered.
+	USAGE
+    )
+    /usr/bin/printf "${USAGE}\n" $0
+}
+
+
+# vim: set et ts=4 sw=4: