Resolve "Remove Gits class object and use CreateInputsModel directly"

Closes #9, #10, and #7

See merge request in-wop/griwrm!3

- try to solve libxml2-dev dependency

- try to solve libxml2-dev dependency
- see  https://serverfault.com/a/227194

- try to solve libxml2-dev dependency
- see https://github.com/rocker-org/rocker/issues/134

- try to solve libxml2-dev dependency

- try to solve libxml2-dev dependency

Closes #10

Refs #10

Closes #9

Refs #8

Refs #8

- remove Gits dependencies
- update vignettes
- correct management of data gaps in observed flow (previously interpolated and now removed from the calibration and graphics)

Refs #7

This reverts commit 4257c08f.

Resolve "Calibration of semi-distributed model"

Closes #3

See merge request in-wop/griwrm!1

Closes  #3

- CreateInputsModel LengthHydro and BasinAreas parameters should now be vectors instead of matrices

- Change variable name InputsModel$QobsUpstr to InputsModel$Qupstream

Refs #3

Refs #6

Refs #3

Refs #3

Refs #3

- Add all functions for calibration
- vignette for calibration in context of natural catchment

Refs #3

Refs #6

Refs #6

Refs #6

Refs #6

- Need remote package in order to use update.packages instead of install.packages which reinstall packages at each run

Refs #6

Refs #6

Refs #6

Refs #6

Refs #6