Gspread-formatting

-------------------
- Bump to v1.2.0. [Robin Thomas]
- Add TextFormatRun support (57) [Robin Thomas]

Fixes 54.
- Remove unneeded badges. [Robin Thomas]
- Fix Google Sheets docs URL in README (55) [Matt Black]
- Formatting correction in README. [Robin Thomas]

-------------------
- Bump to v1.1.2. [Robin Thomas]
- Added test coverage of include_column_header=False case. [Robin
Thomas]
- Fix exception when include_column_header=False. [pomcho555]

UnboundLocalError would occur, because freeze_args is defined in the wrong place. Fixed.
- Fixed formatting issue with RTL section of README. [Robin Thomas]

-------------------
- Bump to v1.1.1. [Robin Thomas]
- Add README documentation for right-to-left support. [Robin Thomas]

-------------------
- Bump to v1.1.0. [Robin Thomas]
- Adds `get_right_to_left` and `set_right_to_left` functions. (44)
[Robin Thomas]

* Adds `get_right_to_left` and `set_right_to_left` functions.
(`set_right_to_left` is also available in the batch updater.)
Fixes 43.

-------------------
- Bump to v1.0.6. [Robin Thomas]
- Enforce type on items added to conditional format rules sequence
object. [Robin Thomas]