Steve posted while I was writing, so apology for repeating, also
I have included some additional links to documentation, for anyone
willing to take the time to read it.
Based on this, it is not available for the current stable version
of Debian,...I looked at the link as well, and it says it is only
available for "Debian stretch" , testing and "SID".
stretch (testing) (editors): heavily refactored vim fork
0.1.7-3: amd64 arm64 armel armhf i386 mips mips64el mipsel ppc64el s390x
sid (unstable) (editors): heavily refactored vim fork
0.1.7-3: alpha amd64 arm64 armel armhf hppa i386 kfreebsd-amd64 kfreebsd-i386 mips mips64el mipsel powerpc ppc64 ppc64el s390x sparc64
0.1.5-8 [debports]: x32
Changing ones sources to different mirrors, will not change the fact
that it is not available for Debian Jessie (stable) .
If the OP wanted to upgrade their system to Debian Stretch (testing)
it would be available,
That is a decision for the OP , if it is that important to have the package.
by Tamim » I know little about GNU/Linux. Please help me install packages with 'apt-get'.
It also would be a good idea to maybe read:https://wiki.debian.org/DontBreakDebian
and also read some of the documentation on what Debian testing is, and who should or shouldn't use it, before deciding to upgrade or not.
On "please help me install packages with 'apt-get'"
I would suggest reading these to anybody "new" to Debian. https://wiki.debian.org/DebianPackageManagement
Is a good place to start, there are many details.
There is more using this search string: How to install packages using apt-get on Debian