RQGIS 1.0.2

Bugs

• making sure that setup_win() works properly when the working directory is a server (commit ccc1baa & 263a1cf)
• solving winslash problems occurring in conjunction with Python, e.g., when in tempdir() directory names start with \n or \t (see commits 484e1d3, 8befac3 and issue #71)
• set_env() now uses forward instead of backward slashes (commit 8befac3 and issue #83)
• making sure under Linux that the decimal operator is a colon not a comma with the help of Sys.setlocale (see commit f3c7e15)
• making sure that default parameter values will not be overwritten by RQGIS.check_args (commit 29fb26a and issue #79)
• reticulate 1.1 caused some trouble due to json parsing in conda_list() (solved by: rstudio/reticulate#100; @jjallaire).