gcalcli is outdated - search from date to date does not work

[Norbert]

Steps to reproduce:
1. Install gcalcli from official repositories on Xenial with `sudo apt-get install gcalcli`
2. Authorize it with `gcalcli agenda`
3. Try to search events between dates with
`gcalcli search "event" '2017-09-01T00:00' '2017-10-01T00:00'`
4. Get error message:
"Error: invalid search string"

Expected results:
gcalcli allows to search events between dates

Actual results:
gcalcli does not allow to search events between dates

Possible solution:
remove outdated gcalcli (`sudo apt-get purge gcalcli -y && sudo apt-get autoremove -y`) and install it with `sudo pip install gcalcli`

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gcalcli 3.3.2-1ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-97.120-generic 4.4.87
Uname: Linux 4.4.0-97-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
CurrentDesktop: MATE
Date: Fri Oct 27 16:14:15 2017
InstallationDate: Installed on 2010-12-05 (2517 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
PackageArchitecture: all
SourcePackage: gcalcli
UpgradeStatus: Upgraded to xenial on 2017-06-24 (124 days ago)