Instaloader

- Download highest-resolution images if logged-in (630, 662)
- Store sessionfile per default in a persistent path, e.g. on Linux and OS X in `~/.config/instaloader` rather than in a volatile temporary directory (659)
- Windows Standalone EXE: Start Powershell instead of CMD if started via file explorer

This is a **pre release**. Install with

pip3 install --pre [--upgrade] instaloader

- Download highest-resolution images if logged-in (630, 662)
- Store sessionfile per default in a persistent path, e.g. on Linux and OS X in `~/.config/instaloader` rather than in a volatile temporary directory (659)
- Windows Standalone EXE: Start Powershell instead of CMD if started via file explorer

This is a **pre release**. Install with

pip3 install --pre [--upgrade] instaloader

- Download highest-resolution images if logged-in (630, 662)
- Store sessionfile per default in a persistent path, e.g. on Linux and OS X in `~/.config/instaloader` rather than in a volatile temporary directory (659)
- Windows Standalone EXE: Start Powershell instead of CMD if started via file explorer

This is a **pre release**. Install with

pip3 install --pre [--upgrade] instaloader

Bugfixes regarding directory path names on Windows, via 631 by fireattack:
- Fix that e.g. `--dirname-pattern=D:\test` created a directory `D:\test` in the current working directory instead of using the folder `D:\test` on device `D:` (279, 529)
- Fix that folders created with `--tagged` and `--highlight` were not created as subfolders in the profile directory (304)
- Further changes regarding path name handling on Windows:
- Substitution of colon to full-width colon (U+FF1A) instead of MODIFIER LETTER COLON (U+A789) to be consistent with others (we use full-width backslash, pipe, etc. already)
- Replace `\r` on Windows with space, just like `\n`

(no changes for non-Windows systems)

Fix `Login error: JSON decode fail, 400 - Bad Request.` (615, fixed in 623 by Infinitay, workaround credit: pgrimaud, pgrimaud/instagram-user-feed96ad4cf)

Fix downloading hashtags containing non-ASCII characters (614)