Fix #1166: Changed visibility from protected to public (cherry picked from commit fd2f963b7ab675f7a18e535a3b5cc09b1ffda1d3)
add double type for column.c
(cherry picked from commit 4aaa1fe5ed38764bdb9fa4472e9c94470933d8a5)
Support for UTF8 characters in jsmin [ci skip]
(cherry picked from commit 35b0113d155f29e21803ebcf8d63a512fb5c21d4)
Do not restore someone else's frame in listenLowSeverity()
(cherry picked from commit f2f83cba394211f948287b034c3c92e4a7c44141)
Fix #1099
(cherry picked from commit eb4f35659048e54ccf3e82b92791a0c01b1ccd57)
Fix #1091
(cherry picked from commit 5e6f676cc968aabf88dab20bbaa56e1a38461789)
Implemented Phalcon\Cache\Backend\Memory::queryKeys()
(cherry picked from commit c46c766ba11d048be703fa7e43f81aa71623df06)
Documentation bug fixes

Cherry picked from commits:
  * 97bcf2584c56e79c6fbe6323a263a3997f5596c6
  * 93d0801668786b705bbdc677958fec8090cd66db
  * 1aaf53377d048979da089bcdd3e69ce86124c8be
  * 226a7dc9783a10a6e257060e140fa98087125340
  * abcf5bb9b5be7082b35ab97bd6f7e4a4b9a56b1c
Fix memory leak
(cherry picked from commit 728ca3d076bf11b28f7c41246447ef738cdfbfeb)

Conflicts:
	ext/mvc/view/engine/volt/compiler.c