TeXstudio shortcuts cheat sheet_Changelog

To be improved upon (May or may not happen...):
- Constant width of the commands column across all tables (see e.g. Idefix vs. Tools)
- Uneven spread of tables across `multicol` (possible fix: breaking table across multicol?)
- More graphics/icons (unlikely, since I want the .tex to be readily compilable by everyone)

v1.2b (14 November 2018)
- Removed `Ctrl+M` as Continue Find default shortcut (https://github.com/texstudio-org/texstudio/commit/8b6b025f5bc45b22e1966a7c0d76d79ff3354d89)
- "Default"/suggested shortcuts for macros now include `Ctrl+M, A` (for TXS version > 2.12.12)

v1.2a (24 February 2018)
- Added additional shortcuts, indicated by a short rule/line.
- Added in the Editor-specific shortcuts (Basic Key Mappings), partially.

v1.2 (28 April 2017)
- Added the `How to use' section at the top of the document
- Placed table headings under `\multicolumn{}{}{}` so that they span the entire table
- Implemented constant column width across all tables, for consistency (using `\sbox` and `\wd`)
- Declare the `P` and `L` columns as new column types, to make code neater

v1.1 (21 April 2017)
- Fixed typo on 'Select all' command
- Color definition added 'impt'
- Included capability of coloring in individual rows with `\rowcolor{impt}` to highlight important rows for the user
- Used `\arraystretch` instead to fix row heights
- Added additional section of 'Own shortcuts/Macros' for the user to personalize. Can be removed if deemed unnecessary

v1.0 (19 April 2017)
- Created template
- Included all of the default shortcuts from TeXstudio 2.12.4 (hg 6476:3e5c3afa4719)