improve changelog generation from git: faster, better version number
improve changelog generation from git: faster, better version number

RunningLight/machinekit,cnc-club/linuxcnc,kinsamanka/machinekit,bmwiedemann/linuxcnc-mirror,EqAfrica/machinekit,strahlex/machinekit,araisrobo/linuxcnc,strahlex/machinekit,cdsteinkuehler/linuxcnc,ArcEye/MK-Qt5,ArcEye/machinekit-testing,bmwiedemann/linuxcnc-mirror,narogon/linuxcnc,Cid427/machinekit,RunningLight/machinekit,araisrobo/linuxcnc,cnc-club/linuxcnc,kinsamanka/machinekit,mhaberler/machinekit,aschiffler/linuxcnc,araisrobo/linuxcnc,aschiffler/linuxcnc,araisrobo/machinekit,mhaberler/machinekit,strahlex/machinekit,bobvanderlinden/machinekit,unseenlaser/machinekit,araisrobo/machinekit,cdsteinkuehler/MachineKit,Cid427/machinekit,araisrobo/linuxcnc,araisrobo/machinekit,unseenlaser/machinekit,ArcEye/MK-Qt5,ArcEye/machinekit-testing,unseenlaser/machinekit,cnc-club/linuxcnc,cdsteinkuehler/MachineKit,araisrobo/machinekit,RunningLight/machinekit,Cid427/machinekit,bobvanderlinden/machinekit,EqAfrica/machinekit,ArcEye/machinekit-testing,narogon/linuxcnc,ikcalB/linuxcnc-mirror,unseenlaser/linuxcnc,ikcalB/linuxcnc-mirror,ArcEye/machinekit-testing,jaguarcat79/ILC-with-LinuxCNC,unseenlaser/machinekit,Cid427/machinekit,ArcEye/MK-Qt5,bobvanderlinden/machinekit,mhaberler/machinekit,Cid427/machinekit,EqAfrica/machinekit,aschiffler/linuxcnc,kinsamanka/machinekit,RunningLight/machinekit,cdsteinkuehler/MachineKit,bobvanderlinden/machinekit,ArcEye/machinekit-testing,ArcEye/MK-Qt5,kinsamanka/machinekit,mhaberler/machinekit,cnc-club/linuxcnc,mhaberler/machinekit,cnc-club/linuxcnc,ianmcmahon/linuxcnc-mirror,EqAfrica/machinekit,bobvanderlinden/machinekit,ianmcmahon/linuxcnc-mirror,RunningLight/machinekit,ikcalB/linuxcnc-mirror,araisrobo/machinekit,bmwiedemann/linuxcnc-mirror,cdsteinkuehler/linuxcnc,araisrobo/linuxcnc,unseenlaser/machinekit,bobvanderlinden/machinekit,araisrobo/machinekit,ianmcmahon/linuxcnc-mirror,mhaberler/machinekit,kinsamanka/machinekit,cdsteinkuehler/MachineKit,ianmcmahon/linuxcnc-mirror,narogon/linuxcnc,cdsteinkuehler/linuxcnc,bmwiedemann/linuxcnc-mirror,strahlex/machinekit,mhaberler/machinekit,RunningLight/machinekit,narogon/linuxcnc,cnc-club/linuxcnc,ArcEye/MK-Qt5,ArcEye/machinekit-testing,ikcalB/linuxcnc-mirror,RunningLight/machinekit,Cid427/machinekit,cdsteinkuehler/MachineKit,ikcalB/linuxcnc-mirror,bobvanderlinden/machinekit,ianmcmahon/linuxcnc-mirror,ianmcmahon/linuxcnc-mirror,ArcEye/MK-Qt5,cdsteinkuehler/linuxcnc,strahlex/machinekit,araisrobo/machinekit,EqAfrica/machinekit,cnc-club/linuxcnc,EqAfrica/machinekit,araisrobo/machinekit,bmwiedemann/linuxcnc-mirror,ArcEye/machinekit-testing,RunningLight/machinekit,ArcEye/machinekit-testing,kinsamanka/machinekit,aschiffler/linuxcnc,jaguarcat79/ILC-with-LinuxCNC,narogon/linuxcnc,cdsteinkuehler/linuxcnc,EqAfrica/machinekit,Cid427/machinekit,kinsamanka/machinekit,ArcEye/MK-Qt5,unseenlaser/machinekit,bmwiedemann/linuxcnc-mirror,mhaberler/machinekit,Cid427/machinekit,bmwiedemann/linuxcnc-mirror,jaguarcat79/ILC-with-LinuxCNC,jaguarcat79/ILC-with-LinuxCNC,unseenlaser/linuxcnc,unseenlaser/linuxcnc,ikcalB/linuxcnc-mirror,ikcalB/linuxcnc-mirror,araisrobo/machinekit,unseenlaser/linuxcnc,unseenlaser/linuxcnc,strahlex/machinekit,bobvanderlinden/machinekit,strahlex/machinekit,aschiffler/linuxcnc,ArcEye/MK-Qt5,EqAfrica/machinekit,jaguarcat79/ILC-with-LinuxCNC,ianmcmahon/linuxcnc-mirror,unseenlaser/machinekit,unseenlaser/machinekit,cdsteinkuehler/MachineKit,kinsamanka/machinekit,cdsteinkuehler/linuxcnc